zend_execute.c

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/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) Zend Technologies Ltd. (http://www.zend.com)           |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.00 of the Zend license,     |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.zend.com/license/2_00.txt.                                |
   | If you did not receive a copy of the Zend license and are unable to  |
   | obtain it through the world-wide-web, please send a note to          |
   | license@zend.com so we can mail you a copy immediately.              |
   +----------------------------------------------------------------------+
   | Authors: Andi Gutmans <andi@php.net>                                 |
   |          Zeev Suraski <zeev@php.net>                                 |
   |          Dmitry Stogov <dmitry@php.net>                              |
   +----------------------------------------------------------------------+
*/
 
#define ZEND_INTENSIVE_DEBUGGING 0
 
#include <stdio.h>
#include <signal.h>
 
#include "zend.h"
#include "zend_compile.h"
#include "zend_execute.h"
#include "zend_API.h"
#include "zend_ptr_stack.h"
#include "zend_constants.h"
#include "zend_extensions.h"
#include "zend_ini.h"
#include "zend_exceptions.h"
#include "zend_interfaces.h"
#include "zend_closures.h"
#include "zend_generators.h"
#include "zend_vm.h"
#include "zend_dtrace.h"
#include "zend_inheritance.h"
#include "zend_type_info.h"
#include "zend_smart_str.h"
#include "zend_observer.h"
#include "zend_system_id.h"
#include "zend_call_stack.h"
#include "zend_attributes.h"
#include "Optimizer/zend_func_info.h"
 
/* Virtual current working directory support */
#include "zend_virtual_cwd.h"
 
#ifdef HAVE_GCC_GLOBAL_REGS
# if defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(i386)
#  define ZEND_VM_FP_GLOBAL_REG "%esi"
#  define ZEND_VM_IP_GLOBAL_REG "%edi"
# elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__x86_64__)
#  define ZEND_VM_FP_GLOBAL_REG "%r14"
#  define ZEND_VM_IP_GLOBAL_REG "%r15"
# elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__powerpc64__)
#  define ZEND_VM_FP_GLOBAL_REG "r14"
#  define ZEND_VM_IP_GLOBAL_REG "r15"
# elif defined(__IBMC__) && ZEND_GCC_VERSION >= 4002 && defined(__powerpc64__)
#  define ZEND_VM_FP_GLOBAL_REG "r14"
#  define ZEND_VM_IP_GLOBAL_REG "r15"
# elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__aarch64__)
#  define ZEND_VM_FP_GLOBAL_REG "x27"
#  define ZEND_VM_IP_GLOBAL_REG "x28"
#elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__riscv) && __riscv_xlen == 64
#  define ZEND_VM_FP_GLOBAL_REG "x18"
#  define ZEND_VM_IP_GLOBAL_REG "x19"
# endif
#endif
 
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
# pragma GCC diagnostic ignored "-Wvolatile-register-var"
  register zend_execute_data* volatile execute_data __asm__(ZEND_VM_FP_GLOBAL_REG);
# pragma GCC diagnostic warning "-Wvolatile-register-var"
#endif
 
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
# define EXECUTE_DATA_D     void
# define EXECUTE_DATA_C
# define EXECUTE_DATA_DC
# define EXECUTE_DATA_CC
# define NO_EXECUTE_DATA_CC
#else
# define EXECUTE_DATA_D     zend_execute_data* execute_data
# define EXECUTE_DATA_C     execute_data
# define EXECUTE_DATA_DC    , EXECUTE_DATA_D
# define EXECUTE_DATA_CC    , EXECUTE_DATA_C
# define NO_EXECUTE_DATA_CC , NULL
#endif
 
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
# define OPLINE_D           void
# define OPLINE_C
# define OPLINE_DC
# define OPLINE_CC
#else
# define OPLINE_D           const zend_op* opline
# define OPLINE_C           opline
# define OPLINE_DC          , OPLINE_D
# define OPLINE_CC          , OPLINE_C
#endif
 
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
# pragma GCC diagnostic ignored "-Wvolatile-register-var"
  register const zend_op* volatile opline __asm__(ZEND_VM_IP_GLOBAL_REG);
# pragma GCC diagnostic warning "-Wvolatile-register-var"
#else
#endif
 
#define _CONST_CODE  0
#define _TMP_CODE    1
#define _VAR_CODE    2
#define _UNUSED_CODE 3
#define _CV_CODE     4
 
typedef int (ZEND_FASTCALL *incdec_t)(zval *);
 
#define get_zval_ptr(op_type, node, type) _get_zval_ptr(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_zval_ptr_deref(op_type, node, type) _get_zval_ptr_deref(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_zval_ptr_undef(op_type, node, type) _get_zval_ptr_undef(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_op_data_zval_ptr_r(op_type, node) _get_op_data_zval_ptr_r(op_type, node EXECUTE_DATA_CC OPLINE_CC)
#define get_op_data_zval_ptr_deref_r(op_type, node) _get_op_data_zval_ptr_deref_r(op_type, node EXECUTE_DATA_CC OPLINE_CC)
#define get_zval_ptr_ptr(op_type, node, type) _get_zval_ptr_ptr(op_type, node, type EXECUTE_DATA_CC)
#define get_zval_ptr_ptr_undef(op_type, node, type) _get_zval_ptr_ptr(op_type, node, type EXECUTE_DATA_CC)
#define get_obj_zval_ptr(op_type, node, type) _get_obj_zval_ptr(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_obj_zval_ptr_undef(op_type, node, type) _get_obj_zval_ptr_undef(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_obj_zval_ptr_ptr(op_type, node, type) _get_obj_zval_ptr_ptr(op_type, node, type EXECUTE_DATA_CC)
 
#define RETURN_VALUE_USED(opline) ((opline)->result_type != IS_UNUSED)
 
static ZEND_FUNCTION(pass)
{
}
 
ZEND_BEGIN_ARG_INFO_EX(zend_pass_function_arg_info, 0, 0, 0)
ZEND_END_ARG_INFO()
 
ZEND_API const zend_internal_function zend_pass_function = {
    ZEND_INTERNAL_FUNCTION, /* type              */
    {0, 0, 0},              /* arg_flags         */
    0,                      /* fn_flags          */
    NULL,                   /* name              */
    NULL,                   /* scope             */
    NULL,                   /* prototype         */
    0,                      /* num_args          */
    0,                      /* required_num_args */
    (zend_internal_arg_info *) zend_pass_function_arg_info + 1, /* arg_info */
    NULL,                   /* attributes        */
    NULL,                   /* run_time_cache    */
    NULL,                   /* doc_comment       */
    0,                      /* T                 */
    NULL,                   /* prop_info */
    ZEND_FN(pass),          /* handler           */
    NULL,                   /* module            */
    NULL,                   /* frameless_function_infos */
    {NULL,NULL,NULL,NULL}   /* reserved          */
};
 
#define FREE_VAR_PTR_AND_EXTRACT_RESULT_IF_NECESSARY(free_var) do {         \
    zval *__container_to_free = EX_VAR(free_var);                           \
    if (UNEXPECTED(Z_REFCOUNTED_P(__container_to_free))) {                  \
        zend_refcounted *__ref = Z_COUNTED_P(__container_to_free);          \
        if (UNEXPECTED(!GC_DELREF(__ref))) {                                \
            zval *__zv = EX_VAR(opline->result.var);                        \
            if (EXPECTED(Z_TYPE_P(__zv) == IS_INDIRECT)) {                  \
                ZVAL_COPY(__zv, Z_INDIRECT_P(__zv));                        \
            }                                                               \
            rc_dtor_func(__ref);                                            \
        }                                                                   \
    }                                                                       \
} while (0)
 
#define FREE_OP(type, var) \
    if ((type) & (IS_TMP_VAR|IS_VAR)) { \
        zval_ptr_dtor_nogc(EX_VAR(var)); \
    }
 
#define CV_DEF_OF(i) (EX(func)->op_array.vars[i])
 
#define ZEND_VM_STACK_PAGE_SLOTS (16 * 1024) /* should be a power of 2 */
 
#define ZEND_VM_STACK_PAGE_SIZE  (ZEND_VM_STACK_PAGE_SLOTS * sizeof(zval))
 
#define ZEND_VM_STACK_PAGE_ALIGNED_SIZE(size, page_size) \
    (((size) + ZEND_VM_STACK_HEADER_SLOTS * sizeof(zval) \
      + ((page_size) - 1)) & ~((page_size) - 1))
 
ZEND_API void zend_vm_stack_init(void)
{
    EG(vm_stack_page_size) = ZEND_VM_STACK_PAGE_SIZE;
    EG(vm_stack) = zend_vm_stack_new_page(ZEND_VM_STACK_PAGE_SIZE, NULL);
    EG(vm_stack_top) = EG(vm_stack)->top;
    EG(vm_stack_end) = EG(vm_stack)->end;
}
 
ZEND_API void zend_vm_stack_init_ex(size_t page_size)
{
    /* page_size must be a power of 2 */
    ZEND_ASSERT(page_size > 0 && (page_size & (page_size - 1)) == 0);
    EG(vm_stack_page_size) = page_size;
    EG(vm_stack) = zend_vm_stack_new_page(page_size, NULL);
    EG(vm_stack_top) = EG(vm_stack)->top;
    EG(vm_stack_end) = EG(vm_stack)->end;
}
 
ZEND_API void zend_vm_stack_destroy(void)
{
    zend_vm_stack stack = EG(vm_stack);
 
    while (stack != NULL) {
        zend_vm_stack p = stack->prev;
        efree(stack);
        stack = p;
    }
}
 
ZEND_API void* zend_vm_stack_extend(size_t size)
{
    zend_vm_stack stack;
    void *ptr;
 
    stack = EG(vm_stack);
    stack->top = EG(vm_stack_top);
    EG(vm_stack) = stack = zend_vm_stack_new_page(
        EXPECTED(size < EG(vm_stack_page_size) - (ZEND_VM_STACK_HEADER_SLOTS * sizeof(zval))) ?
            EG(vm_stack_page_size) : ZEND_VM_STACK_PAGE_ALIGNED_SIZE(size, EG(vm_stack_page_size)),
        stack);
    ptr = stack->top;
    EG(vm_stack_top) = (void*)(((char*)ptr) + size);
    EG(vm_stack_end) = stack->end;
    return ptr;
}
 
ZEND_API zval* zend_get_compiled_variable_value(const zend_execute_data *execute_data, uint32_t var)
{
    return EX_VAR(var);
}
 
ZEND_API bool zend_gcc_global_regs(void)
{
  #if defined(HAVE_GCC_GLOBAL_REGS)
        return 1;
  #else
        return 0;
  #endif
}
 
static zend_always_inline zval *_get_zval_ptr_tmp(uint32_t var EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    ZEND_ASSERT(Z_TYPE_P(ret) != IS_REFERENCE);
 
    return ret;
}
 
static zend_always_inline zval *_get_zval_ptr_var(uint32_t var EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    return ret;
}
 
static zend_always_inline zval *_get_zval_ptr_var_deref(uint32_t var EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    ZVAL_DEREF(ret);
    return ret;
}
 
static zend_never_inline ZEND_COLD zval* zval_undefined_cv(uint32_t var EXECUTE_DATA_DC)
{
    if (EXPECTED(EG(exception) == NULL)) {
        zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
        zend_error_unchecked(E_WARNING, "Undefined variable $%S", cv);
    }
    return &EG(uninitialized_zval);
}
 
static zend_never_inline ZEND_COLD zval* ZEND_FASTCALL _zval_undefined_op1(EXECUTE_DATA_D)
{
    return zval_undefined_cv(EX(opline)->op1.var EXECUTE_DATA_CC);
}
 
static zend_never_inline ZEND_COLD zval* ZEND_FASTCALL _zval_undefined_op2(EXECUTE_DATA_D)
{
    return zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC);
}
 
#define ZVAL_UNDEFINED_OP1() _zval_undefined_op1(EXECUTE_DATA_C)
#define ZVAL_UNDEFINED_OP2() _zval_undefined_op2(EXECUTE_DATA_C)
 
static zend_never_inline ZEND_COLD zval *_get_zval_cv_lookup(zval *ptr, uint32_t var, int type EXECUTE_DATA_DC)
{
    switch (type) {
        case BP_VAR_R:
        case BP_VAR_UNSET:
            ptr = zval_undefined_cv(var EXECUTE_DATA_CC);
            break;
        case BP_VAR_IS:
            ptr = &EG(uninitialized_zval);
            break;
        case BP_VAR_RW:
            zval_undefined_cv(var EXECUTE_DATA_CC);
            ZEND_FALLTHROUGH;
        case BP_VAR_W:
            ZVAL_NULL(ptr);
            break;
    }
    return ptr;
}
 
static zend_always_inline zval *_get_zval_ptr_cv(uint32_t var, int type EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
        if (type == BP_VAR_W) {
            ZVAL_NULL(ret);
        } else {
            return _get_zval_cv_lookup(ret, var, type EXECUTE_DATA_CC);
        }
    }
    return ret;
}
 
static zend_always_inline zval *_get_zval_ptr_cv_deref(uint32_t var, int type EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
        if (type == BP_VAR_W) {
            ZVAL_NULL(ret);
            return ret;
        } else {
            return _get_zval_cv_lookup(ret, var, type EXECUTE_DATA_CC);
        }
    }
    ZVAL_DEREF(ret);
    return ret;
}
 
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_R(uint32_t var EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
        return zval_undefined_cv(var EXECUTE_DATA_CC);
    }
    return ret;
}
 
static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_R(uint32_t var EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
        return zval_undefined_cv(var EXECUTE_DATA_CC);
    }
    ZVAL_DEREF(ret);
    return ret;
}
 
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_IS(uint32_t var EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    return ret;
}
 
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_RW(uint32_t var EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
        zval_undefined_cv(var EXECUTE_DATA_CC);
        ZVAL_NULL(ret);
        return ret;
    }
    return ret;
}
 
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_W(uint32_t var EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    if (Z_TYPE_P(ret) == IS_UNDEF) {
        ZVAL_NULL(ret);
    }
    return ret;
}
 
static zend_always_inline zval *_get_zval_ptr_tmpvarcv(int op_type, znode_op node, int type EXECUTE_DATA_DC)
{
    if (op_type & (IS_TMP_VAR|IS_VAR)) {
        if (op_type == IS_TMP_VAR) {
            return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
        } else {
            ZEND_ASSERT(op_type == IS_VAR);
            return _get_zval_ptr_var_deref(node.var EXECUTE_DATA_CC);
        }
    } else {
        ZEND_ASSERT(op_type == IS_CV);
        return _get_zval_ptr_cv_deref(node.var, type EXECUTE_DATA_CC);
    }
}
 
static zend_always_inline zval *_get_zval_ptr(int op_type, znode_op node, int type EXECUTE_DATA_DC OPLINE_DC)
{
    if (op_type & (IS_TMP_VAR|IS_VAR)) {
        if (!ZEND_DEBUG || op_type == IS_VAR) {
            return _get_zval_ptr_var(node.var EXECUTE_DATA_CC);
        } else {
            ZEND_ASSERT(op_type == IS_TMP_VAR);
            return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
        }
    } else {
        if (op_type == IS_CONST) {
            return RT_CONSTANT(opline, node);
        } else if (op_type == IS_CV) {
            return _get_zval_ptr_cv(node.var, type EXECUTE_DATA_CC);
        } else {
            return NULL;
        }
    }
}
 
static zend_always_inline zval *_get_op_data_zval_ptr_r(int op_type, znode_op node EXECUTE_DATA_DC OPLINE_DC)
{
    if (op_type & (IS_TMP_VAR|IS_VAR)) {
        if (!ZEND_DEBUG || op_type == IS_VAR) {
            return _get_zval_ptr_var(node.var EXECUTE_DATA_CC);
        } else {
            ZEND_ASSERT(op_type == IS_TMP_VAR);
            return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
        }
    } else {
        if (op_type == IS_CONST) {
            return RT_CONSTANT(opline + 1, node);
        } else if (op_type == IS_CV) {
            return _get_zval_ptr_cv_BP_VAR_R(node.var EXECUTE_DATA_CC);
        } else {
            return NULL;
        }
    }
}
 
static zend_always_inline ZEND_ATTRIBUTE_UNUSED zval *_get_zval_ptr_deref(int op_type, znode_op node, int type EXECUTE_DATA_DC OPLINE_DC)
{
    if (op_type & (IS_TMP_VAR|IS_VAR)) {
        if (op_type == IS_TMP_VAR) {
            return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
        } else {
            ZEND_ASSERT(op_type == IS_VAR);
            return _get_zval_ptr_var_deref(node.var EXECUTE_DATA_CC);
        }
    } else {
        if (op_type == IS_CONST) {
            return RT_CONSTANT(opline, node);
        } else if (op_type == IS_CV) {
            return _get_zval_ptr_cv_deref(node.var, type EXECUTE_DATA_CC);
        } else {
            return NULL;
        }
    }
}
 
static zend_always_inline ZEND_ATTRIBUTE_UNUSED zval *_get_op_data_zval_ptr_deref_r(int op_type, znode_op node EXECUTE_DATA_DC OPLINE_DC)
{
    if (op_type & (IS_TMP_VAR|IS_VAR)) {
        if (op_type == IS_TMP_VAR) {
            return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
        } else {
            ZEND_ASSERT(op_type == IS_VAR);
            return _get_zval_ptr_var_deref(node.var EXECUTE_DATA_CC);
        }
    } else {
        if (op_type == IS_CONST) {
            return RT_CONSTANT(opline + 1, node);
        } else if (op_type == IS_CV) {
            return _get_zval_ptr_cv_deref_BP_VAR_R(node.var EXECUTE_DATA_CC);
        } else {
            return NULL;
        }
    }
}
 
static zend_always_inline zval *_get_zval_ptr_undef(int op_type, znode_op node, int type EXECUTE_DATA_DC OPLINE_DC)
{
    if (op_type & (IS_TMP_VAR|IS_VAR)) {
        if (!ZEND_DEBUG || op_type == IS_VAR) {
            return _get_zval_ptr_var(node.var EXECUTE_DATA_CC);
        } else {
            ZEND_ASSERT(op_type == IS_TMP_VAR);
            return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
        }
    } else {
        if (op_type == IS_CONST) {
            return RT_CONSTANT(opline, node);
        } else if (op_type == IS_CV) {
            return EX_VAR(node.var);
        } else {
            return NULL;
        }
    }
}
 
static zend_always_inline zval *_get_zval_ptr_ptr_var(uint32_t var EXECUTE_DATA_DC)
{
    zval *ret = EX_VAR(var);
 
    if (EXPECTED(Z_TYPE_P(ret) == IS_INDIRECT)) {
        ret = Z_INDIRECT_P(ret);
    }
    return ret;
}
 
static inline zval *_get_zval_ptr_ptr(int op_type, znode_op node, int type EXECUTE_DATA_DC)
{
    if (op_type == IS_CV) {
        return _get_zval_ptr_cv(node.var, type EXECUTE_DATA_CC);
    } else /* if (op_type == IS_VAR) */ {
        ZEND_ASSERT(op_type == IS_VAR);
        return _get_zval_ptr_ptr_var(node.var EXECUTE_DATA_CC);
    }
}
 
static inline ZEND_ATTRIBUTE_UNUSED zval *_get_obj_zval_ptr(int op_type, znode_op op, int type EXECUTE_DATA_DC OPLINE_DC)
{
    if (op_type == IS_UNUSED) {
        return &EX(This);
    }
    return get_zval_ptr(op_type, op, type);
}
 
static inline ZEND_ATTRIBUTE_UNUSED zval *_get_obj_zval_ptr_undef(int op_type, znode_op op, int type EXECUTE_DATA_DC OPLINE_DC)
{
    if (op_type == IS_UNUSED) {
        return &EX(This);
    }
    return get_zval_ptr_undef(op_type, op, type);
}
 
static inline ZEND_ATTRIBUTE_UNUSED zval *_get_obj_zval_ptr_ptr(int op_type, znode_op node, int type EXECUTE_DATA_DC)
{
    if (op_type == IS_UNUSED) {
        return &EX(This);
    }
    return get_zval_ptr_ptr(op_type, node, type);
}
 
static inline void zend_assign_to_variable_reference(zval *variable_ptr, zval *value_ptr, zend_refcounted **garbage_ptr)
{
    zend_reference *ref;
 
    if (EXPECTED(!Z_ISREF_P(value_ptr))) {
        ZVAL_NEW_REF(value_ptr, value_ptr);
    } else if (UNEXPECTED(variable_ptr == value_ptr)) {
        return;
    }
 
    ref = Z_REF_P(value_ptr);
    GC_ADDREF(ref);
    if (Z_REFCOUNTED_P(variable_ptr)) {
        *garbage_ptr = Z_COUNTED_P(variable_ptr);
    }
    ZVAL_REF(variable_ptr, ref);
}
 
static zend_never_inline zval* zend_assign_to_typed_property_reference(zend_property_info *prop_info, zval *prop, zval *value_ptr, zend_refcounted **garbage_ptr EXECUTE_DATA_DC)
{
    if (!zend_verify_prop_assignable_by_ref(prop_info, value_ptr, EX_USES_STRICT_TYPES())) {
        return &EG(uninitialized_zval);
    }
    if (Z_ISREF_P(prop)) {
        ZEND_REF_DEL_TYPE_SOURCE(Z_REF_P(prop), prop_info);
    }
    zend_assign_to_variable_reference(prop, value_ptr, garbage_ptr);
    ZEND_REF_ADD_TYPE_SOURCE(Z_REF_P(prop), prop_info);
    return prop;
}
 
static zend_never_inline ZEND_COLD zval *zend_wrong_assign_to_variable_reference(zval *variable_ptr, zval *value_ptr, zend_refcounted **garbage_ptr OPLINE_DC EXECUTE_DATA_DC)
{
    zend_error(E_NOTICE, "Only variables should be assigned by reference");
    if (UNEXPECTED(EG(exception) != NULL)) {
        return &EG(uninitialized_zval);
    }
 
    /* Use IS_TMP_VAR instead of IS_VAR to avoid ISREF check */
    Z_TRY_ADDREF_P(value_ptr);
    return zend_assign_to_variable_ex(variable_ptr, value_ptr, IS_TMP_VAR, EX_USES_STRICT_TYPES(), garbage_ptr);
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_cannot_pass_by_reference(uint32_t arg_num)
{
    const zend_execute_data *execute_data = EG(current_execute_data);
    zend_string *func_name = get_function_or_method_name(EX(call)->func);
    const char *param_name = get_function_arg_name(EX(call)->func, arg_num);
 
    zend_throw_error(NULL, "%s(): Argument #%d%s%s%s could not be passed by reference",
        ZSTR_VAL(func_name), arg_num, param_name ? " ($" : "", param_name ? param_name : "", param_name ? ")" : ""
    );
 
    zend_string_release(func_name);
}
 
static zend_never_inline ZEND_COLD void zend_throw_auto_init_in_prop_error(zend_property_info *prop) {
    zend_string *type_str = zend_type_to_string(prop->type);
    zend_type_error(
        "Cannot auto-initialize an array inside property %s::$%s of type %s",
        ZSTR_VAL(prop->ce->name), zend_get_unmangled_property_name(prop->name),
        ZSTR_VAL(type_str)
    );
    zend_string_release(type_str);
}
 
static zend_never_inline ZEND_COLD void zend_throw_auto_init_in_ref_error(zend_property_info *prop) {
    zend_string *type_str = zend_type_to_string(prop->type);
    zend_type_error(
        "Cannot auto-initialize an array inside a reference held by property %s::$%s of type %s",
        ZSTR_VAL(prop->ce->name), zend_get_unmangled_property_name(prop->name),
        ZSTR_VAL(type_str)
    );
    zend_string_release(type_str);
}
 
static zend_never_inline ZEND_COLD void zend_throw_access_uninit_prop_by_ref_error(
        zend_property_info *prop) {
    zend_throw_error(NULL,
        "Cannot access uninitialized non-nullable property %s::$%s by reference",
        ZSTR_VAL(prop->ce->name),
        zend_get_unmangled_property_name(prop->name));
}
 
/* this should modify object only if it's empty */
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_throw_non_object_error(zval *object, zval *property OPLINE_DC EXECUTE_DATA_DC)
{
    zend_string *tmp_property_name;
    zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name);
 
    if (opline->opcode == ZEND_PRE_INC_OBJ
     || opline->opcode == ZEND_PRE_DEC_OBJ
     || opline->opcode == ZEND_POST_INC_OBJ
     || opline->opcode == ZEND_POST_DEC_OBJ) {
        zend_throw_error(NULL,
            "Attempt to increment/decrement property \"%s\" on %s",
            ZSTR_VAL(property_name), zend_zval_value_name(object)
        );
    } else if (opline->opcode == ZEND_FETCH_OBJ_W
            || opline->opcode == ZEND_FETCH_OBJ_RW
            || opline->opcode == ZEND_FETCH_OBJ_FUNC_ARG
            || opline->opcode == ZEND_ASSIGN_OBJ_REF) {
        zend_throw_error(NULL,
            "Attempt to modify property \"%s\" on %s",
            ZSTR_VAL(property_name), zend_zval_value_name(object)
        );
    } else {
        zend_throw_error(NULL,
            "Attempt to assign property \"%s\" on %s",
            ZSTR_VAL(property_name), zend_zval_value_name(object)
        );
    }
    zend_tmp_string_release(tmp_property_name);
 
    if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
        ZVAL_NULL(EX_VAR(opline->result.var));
    }
}
 
static ZEND_COLD void zend_verify_type_error_common(
        const zend_function *zf, const zend_arg_info *arg_info, zval *value,
        const char **fname, const char **fsep, const char **fclass,
        zend_string **need_msg, const char **given_kind)
{
    *fname = ZSTR_VAL(zf->common.function_name);
    if (zf->common.scope) {
        *fsep =  "::";
        *fclass = ZSTR_VAL(zf->common.scope->name);
    } else {
        *fsep =  "";
        *fclass = "";
    }
 
    *need_msg = zend_type_to_string_resolved(arg_info->type, zf->common.scope);
 
    if (value) {
        *given_kind = zend_zval_value_name(value);
    } else {
        *given_kind = "none";
    }
}
 
ZEND_API ZEND_COLD void zend_verify_arg_error(
        const zend_function *zf, const zend_arg_info *arg_info, uint32_t arg_num, zval *value)
{
    zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data;
    const char *fname, *fsep, *fclass;
    zend_string *need_msg;
    const char *given_msg;
 
    zend_verify_type_error_common(
        zf, arg_info, value, &fname, &fsep, &fclass, &need_msg, &given_msg);
 
    ZEND_ASSERT(zf->common.type == ZEND_USER_FUNCTION
        && "Arginfo verification is not performed for internal functions");
    if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
        zend_argument_type_error(arg_num, "must be of type %s, %s given, called in %s on line %d",
            ZSTR_VAL(need_msg), given_msg,
            ZSTR_VAL(ptr->func->op_array.filename), ptr->opline->lineno
        );
    } else {
        zend_argument_type_error(arg_num,
            "must be of type %s, %s given", ZSTR_VAL(need_msg), given_msg);
    }
 
    zend_string_release(need_msg);
}
 
static bool zend_verify_weak_scalar_type_hint(uint32_t type_mask, zval *arg)
{
    zend_long lval;
    double dval;
    zend_string *str;
    bool bval;
 
    /* Type preference order: int -> float -> string -> bool */
    if (type_mask & MAY_BE_LONG) {
        /* For an int|float union type and string value,
         * determine chosen type by is_numeric_string() semantics. */
        if ((type_mask & MAY_BE_DOUBLE) && Z_TYPE_P(arg) == IS_STRING) {
            uint8_t type = is_numeric_str_function(Z_STR_P(arg), &lval, &dval);
            if (type == IS_LONG) {
                zend_string_release(Z_STR_P(arg));
                ZVAL_LONG(arg, lval);
                return 1;
            }
            if (type == IS_DOUBLE) {
                zend_string_release(Z_STR_P(arg));
                ZVAL_DOUBLE(arg, dval);
                return 1;
            }
        } else if (zend_parse_arg_long_weak(arg, &lval, 0)) {
            zval_ptr_dtor(arg);
            ZVAL_LONG(arg, lval);
            return 1;
        } else if (UNEXPECTED(EG(exception))) {
            return 0;
        }
    }
    if ((type_mask & MAY_BE_DOUBLE) && zend_parse_arg_double_weak(arg, &dval, 0)) {
        zval_ptr_dtor(arg);
        ZVAL_DOUBLE(arg, dval);
        return 1;
    }
    if ((type_mask & MAY_BE_STRING) && zend_parse_arg_str_weak(arg, &str, 0)) {
        /* on success "arg" is converted to IS_STRING */
        return 1;
    }
    if ((type_mask & MAY_BE_BOOL) == MAY_BE_BOOL && zend_parse_arg_bool_weak(arg, &bval, 0)) {
        zval_ptr_dtor(arg);
        ZVAL_BOOL(arg, bval);
        return 1;
    }
    return 0;
}
 
#if ZEND_DEBUG
static bool can_convert_to_string(const zval *zv) {
    /* We don't call cast_object here, because this check must be side-effect free. As this
     * is only used for a sanity check of arginfo/zpp consistency, it's okay if we accept
     * more than actually allowed here. */
    if (Z_TYPE_P(zv) == IS_OBJECT) {
        return Z_OBJ_HT_P(zv)->cast_object != zend_std_cast_object_tostring
            || Z_OBJCE_P(zv)->__tostring;
    }
    return Z_TYPE_P(zv) <= IS_STRING;
}
 
/* Used to sanity-check internal arginfo types without performing any actual type conversions. */
static bool zend_verify_weak_scalar_type_hint_no_sideeffect(uint32_t type_mask, const zval *arg)
{
    zend_long lval;
    double dval;
    bool bval;
 
    /* Pass (uint32_t)-1 as arg_num to indicate to ZPP not to emit any deprecation notice,
     * this is needed because the version with side effects also uses 0 (e.g. for typed properties) */
    if ((type_mask & MAY_BE_LONG) && zend_parse_arg_long_weak(arg, &lval, (uint32_t)-1)) {
        return 1;
    }
    if ((type_mask & MAY_BE_DOUBLE) && zend_parse_arg_double_weak(arg, &dval, (uint32_t)-1)) {
        return 1;
    }
    if ((type_mask & MAY_BE_STRING) && can_convert_to_string(arg)) {
        return 1;
    }
    if ((type_mask & MAY_BE_BOOL) == MAY_BE_BOOL && zend_parse_arg_bool_weak(arg, &bval, (uint32_t)-1)) {
        return 1;
    }
    return 0;
}
#endif
 
ZEND_API bool zend_verify_scalar_type_hint(uint32_t type_mask, zval *arg, bool strict, bool is_internal_arg)
{
    if (UNEXPECTED(strict)) {
        /* SSTH Exception: IS_LONG may be accepted as IS_DOUBLE (converted) */
        if (!(type_mask & MAY_BE_DOUBLE) || Z_TYPE_P(arg) != IS_LONG) {
            return 0;
        }
    } else if (UNEXPECTED(Z_TYPE_P(arg) == IS_NULL)) {
        /* NULL may be accepted only by nullable hints (this is already checked).
         * As an exception for internal functions, null is allowed for scalar types in weak mode. */
        return is_internal_arg
            && (type_mask & (MAY_BE_TRUE|MAY_BE_FALSE|MAY_BE_LONG|MAY_BE_DOUBLE|MAY_BE_STRING));
    }
#if ZEND_DEBUG
    if (is_internal_arg) {
        return zend_verify_weak_scalar_type_hint_no_sideeffect(type_mask, arg);
    }
#endif
    return zend_verify_weak_scalar_type_hint(type_mask, arg);
}
 
ZEND_COLD zend_never_inline void zend_verify_class_constant_type_error(const zend_class_constant *c, const zend_string *name, const zval *constant)
{
    zend_string *type_str = zend_type_to_string(c->type);
 
    zend_type_error("Cannot assign %s to class constant %s::%s of type %s",
        zend_zval_type_name(constant), ZSTR_VAL(c->ce->name), ZSTR_VAL(name), ZSTR_VAL(type_str));
 
    zend_string_release(type_str);
}
 
ZEND_COLD zend_never_inline void zend_verify_property_type_error(const zend_property_info *info, const zval *property)
{
    zend_string *type_str;
 
    /* we _may_ land here in case reading already errored and runtime cache thus has not been updated (i.e. it contains a valid but unrelated info) */
    if (EG(exception)) {
        return;
    }
 
    type_str = zend_type_to_string(info->type);
    zend_type_error("Cannot assign %s to property %s::$%s of type %s",
        zend_zval_value_name(property),
        ZSTR_VAL(info->ce->name),
        zend_get_unmangled_property_name(info->name),
        ZSTR_VAL(type_str));
    zend_string_release(type_str);
}
 
ZEND_COLD zend_never_inline void zend_magic_get_property_type_inconsistency_error(const zend_property_info *info, const zval *property)
{
    /* we _may_ land here in case reading already errored and runtime cache thus has not been updated (i.e. it contains a valid but unrelated info) */
    if (EG(exception)) {
        return;
    }
 
    zend_string *type_str = zend_type_to_string(info->type);
    zend_type_error("Value of type %s returned from %s::__get() must be compatible with unset property %s::$%s of type %s",
        zend_zval_type_name(property),
        ZSTR_VAL(info->ce->name),
        ZSTR_VAL(info->ce->name),
        zend_get_unmangled_property_name(info->name),
        ZSTR_VAL(type_str));
    zend_string_release(type_str);
}
 
ZEND_COLD void zend_match_unhandled_error(const zval *value)
{
    smart_str msg = {0};
    if (
        EG(exception_ignore_args)
        || smart_str_append_zval(&msg, value, EG(exception_string_param_max_len)) != SUCCESS
    ) {
        smart_str_appendl(&msg, "of type ", sizeof("of type ")-1);
        smart_str_appends(&msg, zend_zval_type_name(value));
    }
    smart_str_0(&msg);
 
    zend_throw_exception_ex(
        zend_ce_unhandled_match_error, 0, "Unhandled match case %s", ZSTR_VAL(msg.s));
 
    smart_str_free(&msg);
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_readonly_property_modification_error(
        const zend_property_info *info) {
    zend_readonly_property_modification_error_ex(
        ZSTR_VAL(info->ce->name), zend_get_unmangled_property_name(info->name));
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_readonly_property_modification_error_ex(
        const char *class_name, const char *prop_name) {
    zend_throw_error(NULL, "Cannot modify readonly property %s::$%s", class_name, prop_name);
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_readonly_property_indirect_modification_error(const zend_property_info *info)
{
    zend_throw_error(NULL, "Cannot indirectly modify readonly property %s::$%s",
        ZSTR_VAL(info->ce->name), zend_get_unmangled_property_name(info->name));
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_invalid_class_constant_type_error(uint8_t type)
{
    zend_type_error("Cannot use value of type %s as class constant name", zend_get_type_by_const(type));
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_object_released_while_assigning_to_property_error(const zend_property_info *info)
{
    zend_throw_error(NULL, "Object was released while assigning to property %s::$%s",
        ZSTR_VAL(info->ce->name), zend_get_unmangled_property_name(info->name));
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_asymmetric_visibility_property_modification_error(
    const zend_property_info *prop_info, const char *operation
) {
    zend_class_entry *scope;
    if (EG(fake_scope)) {
        scope = EG(fake_scope);
    } else {
        scope = zend_get_called_scope(EG(current_execute_data));
    }
 
    const char *visibility;
    if (prop_info->flags & ZEND_ACC_PRIVATE_SET) {
        visibility = "private(set)";
    } else {
        ZEND_ASSERT(prop_info->flags & ZEND_ACC_PROTECTED_SET);
        if (prop_info->flags & ZEND_ACC_READONLY) {
            visibility = "protected(set) readonly";
        } else {
            visibility = "protected(set)";
        }
    }
 
    zend_throw_error(NULL, "Cannot %s %s property %s::$%s from %s%s",
        operation,
        visibility,
        ZSTR_VAL(prop_info->ce->name),
        ZSTR_VAL(prop_info->name),
        scope ? "scope " : "global scope", scope ? ZSTR_VAL(scope->name) : "");
}
 
static const zend_class_entry *resolve_single_class_type(zend_string *name, const zend_class_entry *self_ce) {
    if (zend_string_equals_literal_ci(name, "self")) {
        return self_ce;
    } else if (zend_string_equals_literal_ci(name, "parent")) {
        return self_ce->parent;
    } else {
        return zend_lookup_class_ex(name, NULL, ZEND_FETCH_CLASS_NO_AUTOLOAD);
    }
}
 
static zend_always_inline const zend_class_entry *zend_ce_from_type(
        const zend_class_entry *scope, const zend_type *type) {
    ZEND_ASSERT(ZEND_TYPE_HAS_NAME(*type));
    zend_string *name = ZEND_TYPE_NAME(*type);
    if (ZSTR_HAS_CE_CACHE(name)) {
        zend_class_entry *ce = ZSTR_GET_CE_CACHE(name);
        if (!ce) {
            ce = zend_lookup_class_ex(name, NULL, ZEND_FETCH_CLASS_NO_AUTOLOAD);
        }
        return ce;
    }
    return resolve_single_class_type(name, scope);
}
 
static bool zend_check_intersection_for_property_or_class_constant_class_type(
    const zend_class_entry *scope, zend_type_list *intersection_type_list, const zend_class_entry *value_ce)
{
    zend_type *list_type;
 
    ZEND_TYPE_LIST_FOREACH(intersection_type_list, list_type) {
        ZEND_ASSERT(!ZEND_TYPE_HAS_LIST(*list_type));
        const zend_class_entry *ce = zend_ce_from_type(scope, list_type);
        if (!ce || !instanceof_function(value_ce, ce)) {
            return false;
        }
    } ZEND_TYPE_LIST_FOREACH_END();
    return true;
}
 
static bool zend_check_and_resolve_property_or_class_constant_class_type(
    const zend_class_entry *scope, zend_type member_type, const zend_class_entry *value_ce) {
    if (ZEND_TYPE_HAS_LIST(member_type)) {
        zend_type *list_type;
        if (ZEND_TYPE_IS_INTERSECTION(member_type)) {
            return zend_check_intersection_for_property_or_class_constant_class_type(
                scope, ZEND_TYPE_LIST(member_type), value_ce);
        } else {
            ZEND_TYPE_LIST_FOREACH(ZEND_TYPE_LIST(member_type), list_type) {
                if (ZEND_TYPE_IS_INTERSECTION(*list_type)) {
                    if (zend_check_intersection_for_property_or_class_constant_class_type(
                            scope, ZEND_TYPE_LIST(*list_type), value_ce)) {
                        return true;
                    }
                    continue;
                }
                ZEND_ASSERT(!ZEND_TYPE_HAS_LIST(*list_type));
                const zend_class_entry *ce = zend_ce_from_type(scope, list_type);
                if (ce && instanceof_function(value_ce, ce)) {
                    return true;
                }
            } ZEND_TYPE_LIST_FOREACH_END();
 
            if ((ZEND_TYPE_PURE_MASK(member_type) & MAY_BE_STATIC)) {
                return value_ce == scope;
            }
 
            return false;
        }
    } else if ((ZEND_TYPE_PURE_MASK(member_type) & MAY_BE_STATIC) && value_ce == scope) {
        return true;
    } else if (ZEND_TYPE_HAS_NAME(member_type)) {
        const zend_class_entry *ce = zend_ce_from_type(scope, &member_type);
        return ce && instanceof_function(value_ce, ce);
    }
 
    return false;
}
 
static zend_always_inline bool i_zend_check_property_type(const zend_property_info *info, zval *property, bool strict)
{
    ZEND_ASSERT(!Z_ISREF_P(property));
    if (EXPECTED(ZEND_TYPE_CONTAINS_CODE(info->type, Z_TYPE_P(property)))) {
        return 1;
    }
 
    if (ZEND_TYPE_IS_COMPLEX(info->type) && Z_TYPE_P(property) == IS_OBJECT
            && zend_check_and_resolve_property_or_class_constant_class_type(info->ce, info->type, Z_OBJCE_P(property))) {
        return 1;
    }
 
    uint32_t type_mask = ZEND_TYPE_FULL_MASK(info->type);
    ZEND_ASSERT(!(type_mask & (MAY_BE_CALLABLE|MAY_BE_STATIC|MAY_BE_NEVER|MAY_BE_VOID)));
    return zend_verify_scalar_type_hint(type_mask, property, strict, 0);
}
 
static zend_always_inline bool i_zend_verify_property_type(const zend_property_info *info, zval *property, bool strict)
{
    if (i_zend_check_property_type(info, property, strict)) {
        return 1;
    }
 
    zend_verify_property_type_error(info, property);
    return 0;
}
 
ZEND_API bool zend_never_inline zend_verify_property_type(const zend_property_info *info, zval *property, bool strict) {
    return i_zend_verify_property_type(info, property, strict);
}
 
static zend_never_inline zval* zend_assign_to_typed_prop(zend_property_info *info, zval *property_val, zval *value, zend_refcounted **garbage_ptr EXECUTE_DATA_DC)
{
    zval tmp;
 
    if (UNEXPECTED(info->flags & (ZEND_ACC_READONLY|ZEND_ACC_PPP_SET_MASK))) {
        if ((info->flags & ZEND_ACC_READONLY) && !(Z_PROP_FLAG_P(property_val) & IS_PROP_REINITABLE)) {
            zend_readonly_property_modification_error(info);
            return &EG(uninitialized_zval);
        }
        if (info->flags & ZEND_ACC_PPP_SET_MASK && !zend_asymmetric_property_has_set_access(info)) {
            zend_asymmetric_visibility_property_modification_error(info, "modify");
            return &EG(uninitialized_zval);
        }
    }
 
    ZVAL_DEREF(value);
    ZVAL_COPY(&tmp, value);
 
    if (UNEXPECTED(!i_zend_verify_property_type(info, &tmp, EX_USES_STRICT_TYPES()))) {
        zval_ptr_dtor(&tmp);
        return &EG(uninitialized_zval);
    }
 
    Z_PROP_FLAG_P(property_val) &= ~IS_PROP_REINITABLE;
 
    return zend_assign_to_variable_ex(property_val, &tmp, IS_TMP_VAR, EX_USES_STRICT_TYPES(), garbage_ptr);
}
 
static zend_always_inline bool zend_value_instanceof_static(zval *zv) {
    if (Z_TYPE_P(zv) != IS_OBJECT) {
        return 0;
    }
 
    zend_class_entry *called_scope = zend_get_called_scope(EG(current_execute_data));
    if (!called_scope) {
        return 0;
    }
    return instanceof_function(Z_OBJCE_P(zv), called_scope);
}
 
/* The cache_slot may only be NULL in debug builds, where arginfo verification of
 * internal functions is enabled. Avoid unnecessary checks in release builds. */
#if ZEND_DEBUG
# define HAVE_CACHE_SLOT (cache_slot != NULL)
#else
# define HAVE_CACHE_SLOT 1
#endif
 
#define PROGRESS_CACHE_SLOT() if (HAVE_CACHE_SLOT) {cache_slot++;}
 
static zend_always_inline zend_class_entry *zend_fetch_ce_from_cache_slot(
        void **cache_slot, zend_type *type)
{
    if (EXPECTED(HAVE_CACHE_SLOT && *cache_slot)) {
        return (zend_class_entry *) *cache_slot;
    }
 
    zend_string *name = ZEND_TYPE_NAME(*type);
    zend_class_entry *ce;
    if (ZSTR_HAS_CE_CACHE(name)) {
        ce = ZSTR_GET_CE_CACHE(name);
        if (!ce) {
            ce = zend_lookup_class_ex(name, NULL, ZEND_FETCH_CLASS_NO_AUTOLOAD);
            if (UNEXPECTED(!ce)) {
                /* Cannot resolve */
                return NULL;
            }
        }
    } else {
        ce = zend_fetch_class(name,
            ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD | ZEND_FETCH_CLASS_SILENT);
        if (UNEXPECTED(!ce)) {
            return NULL;
        }
    }
    if (HAVE_CACHE_SLOT) {
        *cache_slot = (void *) ce;
    }
    return ce;
}
 
static bool zend_check_intersection_type_from_cache_slot(zend_type_list *intersection_type_list,
    zend_class_entry *arg_ce, void ***cache_slot_ptr)
{
    void **cache_slot = *cache_slot_ptr;
    zend_class_entry *ce;
    zend_type *list_type;
    bool status = true;
    ZEND_TYPE_LIST_FOREACH(intersection_type_list, list_type) {
        /* Only check classes if the type might be valid */
        if (status) {
            ce = zend_fetch_ce_from_cache_slot(cache_slot, list_type);
            /* If type is not an instance of one of the types taking part in the
             * intersection it cannot be a valid instance of the whole intersection type. */
            if (!ce || !instanceof_function(arg_ce, ce)) {
                status = false;
            }
        }
        PROGRESS_CACHE_SLOT();
    } ZEND_TYPE_LIST_FOREACH_END();
    if (HAVE_CACHE_SLOT) {
        *cache_slot_ptr = cache_slot;
    }
    return status;
}
 
static zend_always_inline bool zend_check_type_slow(
        zend_type *type, zval *arg, zend_reference *ref, void **cache_slot,
        bool is_return_type, bool is_internal)
{
    uint32_t type_mask;
    if (ZEND_TYPE_IS_COMPLEX(*type) && EXPECTED(Z_TYPE_P(arg) == IS_OBJECT)) {
        zend_class_entry *ce;
        if (UNEXPECTED(ZEND_TYPE_HAS_LIST(*type))) {
            zend_type *list_type;
            if (ZEND_TYPE_IS_INTERSECTION(*type)) {
                return zend_check_intersection_type_from_cache_slot(ZEND_TYPE_LIST(*type), Z_OBJCE_P(arg), &cache_slot);
            } else {
                ZEND_TYPE_LIST_FOREACH(ZEND_TYPE_LIST(*type), list_type) {
                    if (ZEND_TYPE_IS_INTERSECTION(*list_type)) {
                        if (zend_check_intersection_type_from_cache_slot(ZEND_TYPE_LIST(*list_type), Z_OBJCE_P(arg), &cache_slot)) {
                            return true;
                        }
                        /* The cache_slot is progressed in zend_check_intersection_type_from_cache_slot() */
                    } else {
                        ZEND_ASSERT(!ZEND_TYPE_HAS_LIST(*list_type));
                        ce = zend_fetch_ce_from_cache_slot(cache_slot, list_type);
                        /* Instance of a single type part of a union is sufficient to pass the type check */
                        if (ce && instanceof_function(Z_OBJCE_P(arg), ce)) {
                            return true;
                        }
                        PROGRESS_CACHE_SLOT();
                    }
                } ZEND_TYPE_LIST_FOREACH_END();
            }
        } else {
            ce = zend_fetch_ce_from_cache_slot(cache_slot, type);
            /* If we have a CE we check if it satisfies the type constraint,
             * otherwise it will check if a standard type satisfies it. */
            if (ce && instanceof_function(Z_OBJCE_P(arg), ce)) {
                return true;
            }
        }
    }
 
    type_mask = ZEND_TYPE_FULL_MASK(*type);
    if ((type_mask & MAY_BE_CALLABLE) &&
        zend_is_callable(arg, is_internal ? IS_CALLABLE_SUPPRESS_DEPRECATIONS : 0, NULL)) {
        return 1;
    }
    if ((type_mask & MAY_BE_STATIC) && zend_value_instanceof_static(arg)) {
        return 1;
    }
    if (ref && ZEND_REF_HAS_TYPE_SOURCES(ref)) {
        /* We cannot have conversions for typed refs. */
        return 0;
    }
    if (is_internal && is_return_type) {
        /* For internal returns, the type has to match exactly, because we're not
         * going to check it for non-debug builds, and there will be no chance to
         * apply coercions. */
        return 0;
    }
 
    return zend_verify_scalar_type_hint(type_mask, arg,
        is_return_type ? ZEND_RET_USES_STRICT_TYPES() : ZEND_ARG_USES_STRICT_TYPES(),
        is_internal);
 
    /* Special handling for IS_VOID is not necessary (for return types),
     * because this case is already checked at compile-time. */
}
 
static zend_always_inline bool zend_check_type(
        zend_type *type, zval *arg, void **cache_slot, zend_class_entry *scope,
        bool is_return_type, bool is_internal)
{
    zend_reference *ref = NULL;
    ZEND_ASSERT(ZEND_TYPE_IS_SET(*type));
 
    if (UNEXPECTED(Z_ISREF_P(arg))) {
        ref = Z_REF_P(arg);
        arg = Z_REFVAL_P(arg);
    }
 
    if (EXPECTED(ZEND_TYPE_CONTAINS_CODE(*type, Z_TYPE_P(arg)))) {
        return 1;
    }
 
    return zend_check_type_slow(type, arg, ref, cache_slot, is_return_type, is_internal);
}
 
ZEND_API bool zend_check_user_type_slow(
        zend_type *type, zval *arg, zend_reference *ref, void **cache_slot, bool is_return_type)
{
    return zend_check_type_slow(
        type, arg, ref, cache_slot, is_return_type, /* is_internal */ false);
}
 
static zend_always_inline bool zend_verify_recv_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, void **cache_slot)
{
    zend_arg_info *cur_arg_info;
 
    ZEND_ASSERT(arg_num <= zf->common.num_args);
    cur_arg_info = &zf->common.arg_info[arg_num-1];
 
    if (ZEND_TYPE_IS_SET(cur_arg_info->type)
            && UNEXPECTED(!zend_check_type(&cur_arg_info->type, arg, cache_slot, zf->common.scope, 0, 0))) {
        zend_verify_arg_error(zf, cur_arg_info, arg_num, arg);
        return 0;
    }
 
    return 1;
}
 
static zend_always_inline bool zend_verify_variadic_arg_type(
        zend_function *zf, zend_arg_info *arg_info, uint32_t arg_num, zval *arg, void **cache_slot)
{
    ZEND_ASSERT(ZEND_TYPE_IS_SET(arg_info->type));
    if (UNEXPECTED(!zend_check_type(&arg_info->type, arg, cache_slot, zf->common.scope, 0, 0))) {
        zend_verify_arg_error(zf, arg_info, arg_num, arg);
        return 0;
    }
 
    return 1;
}
 
static zend_never_inline ZEND_ATTRIBUTE_UNUSED bool zend_verify_internal_arg_types(zend_function *fbc, zend_execute_data *call)
{
    uint32_t i;
    uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
    zval *arg = ZEND_CALL_ARG(call, 1);
 
    for (i = 0; i < num_args; ++i) {
        zend_arg_info *cur_arg_info;
        if (EXPECTED(i < fbc->common.num_args)) {
            cur_arg_info = &fbc->common.arg_info[i];
        } else if (UNEXPECTED(fbc->common.fn_flags & ZEND_ACC_VARIADIC)) {
            cur_arg_info = &fbc->common.arg_info[fbc->common.num_args];
        } else {
            break;
        }
 
        if (ZEND_TYPE_IS_SET(cur_arg_info->type)
                && UNEXPECTED(!zend_check_type(&cur_arg_info->type, arg, /* cache_slot */ NULL, fbc->common.scope, 0, /* is_internal */ 1))) {
            return 0;
        }
        arg++;
    }
    return 1;
}
 
#if ZEND_DEBUG
/* Determine whether an internal call should throw, because the passed arguments violate
 * an arginfo constraint. This is only checked in debug builds. In release builds, we
 * trust that arginfo matches what is enforced by zend_parse_parameters. */
ZEND_API bool zend_internal_call_should_throw(zend_function *fbc, zend_execute_data *call)
{
    if (fbc->internal_function.handler == ZEND_FN(pass) || (fbc->internal_function.fn_flags & ZEND_ACC_FAKE_CLOSURE)) {
        /* Be lenient about the special pass function and about fake closures. */
        return 0;
    }
 
    if (fbc->common.required_num_args > ZEND_CALL_NUM_ARGS(call)) {
        /* Required argument not passed. */
        return 1;
    }
 
    if (fbc->common.num_args < ZEND_CALL_NUM_ARGS(call)
            && !(fbc->common.fn_flags & ZEND_ACC_VARIADIC)) {
        /* Too many arguments passed. For internal functions (unlike userland functions),
         * this should always throw. */
        return 1;
    }
 
    if ((fbc->common.fn_flags & ZEND_ACC_HAS_TYPE_HINTS) &&
            !zend_verify_internal_arg_types(fbc, call)) {
        return 1;
    }
 
    return 0;
}
 
ZEND_API ZEND_COLD void zend_internal_call_arginfo_violation(zend_function *fbc)
{
    zend_error_noreturn(E_ERROR, "Arginfo / zpp mismatch during call of %s%s%s()",
        fbc->common.scope ? ZSTR_VAL(fbc->common.scope->name) : "",
        fbc->common.scope ? "::" : "",
        ZSTR_VAL(fbc->common.function_name));
}
 
#ifndef ZEND_VERIFY_FUNC_INFO
# define ZEND_VERIFY_FUNC_INFO 0
#endif
 
static void zend_verify_internal_func_info(zend_function *fn, zval *retval) {
#if ZEND_VERIFY_FUNC_INFO
    zend_string *name = fn->common.function_name;
    uint32_t type_mask = zend_get_internal_func_info(fn, NULL, NULL);
    if (!type_mask) {
        return;
    }
 
    /* Always check refcount of arrays, as immutable arrays are RCN. */
    if (Z_REFCOUNTED_P(retval) || Z_TYPE_P(retval) == IS_ARRAY) {
        if (!(type_mask & MAY_BE_RC1)) {
            zend_error_noreturn(E_CORE_ERROR, "%s() missing rc1", ZSTR_VAL(name));
        }
        if (Z_REFCOUNT_P(retval) > 1 && !(type_mask & MAY_BE_RCN)) {
            zend_error_noreturn(E_CORE_ERROR, "%s() missing rcn", ZSTR_VAL(name));
        }
    }
 
    uint32_t type = 1u << Z_TYPE_P(retval);
    if (!(type_mask & type)) {
        zend_error_noreturn(E_CORE_ERROR, "%s() missing type %s",
            ZSTR_VAL(name), zend_get_type_by_const(Z_TYPE_P(retval)));
    }
 
    if (Z_TYPE_P(retval) == IS_ARRAY) {
        HashTable *ht = Z_ARRVAL_P(retval);
        uint32_t num_checked = 0;
        zend_string *str;
        zval *val;
        ZEND_HASH_FOREACH_STR_KEY_VAL(ht, str, val) {
            if (str) {
                if (!(type_mask & MAY_BE_ARRAY_KEY_STRING)) {
                    zend_error_noreturn(E_CORE_ERROR,
                        "%s() missing array_key_string", ZSTR_VAL(name));
                }
            } else {
                if (!(type_mask & MAY_BE_ARRAY_KEY_LONG)) {
                    zend_error_noreturn(E_CORE_ERROR,
                        "%s() missing array_key_long", ZSTR_VAL(name));
                }
            }
 
            uint32_t array_type = 1u << (Z_TYPE_P(val) + MAY_BE_ARRAY_SHIFT);
            if (!(type_mask & array_type)) {
                zend_error_noreturn(E_CORE_ERROR,
                    "%s() missing array element type %s",
                    ZSTR_VAL(name), zend_get_type_by_const(Z_TYPE_P(retval)));
            }
 
            /* Don't check all elements of large arrays. */
            if (++num_checked > 16) {
                break;
            }
        } ZEND_HASH_FOREACH_END();
    }
#endif
}
#endif
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_missing_arg_error(zend_execute_data *execute_data)
{
    zend_execute_data *ptr = EX(prev_execute_data);
 
    if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
        zend_throw_error(zend_ce_argument_count_error, "Too few arguments to function %s%s%s(), %d passed in %s on line %d and %s %d expected",
            EX(func)->common.scope ? ZSTR_VAL(EX(func)->common.scope->name) : "",
            EX(func)->common.scope ? "::" : "",
            ZSTR_VAL(EX(func)->common.function_name),
            EX_NUM_ARGS(),
            ZSTR_VAL(ptr->func->op_array.filename),
            ptr->opline->lineno,
            EX(func)->common.required_num_args == EX(func)->common.num_args ? "exactly" : "at least",
            EX(func)->common.required_num_args);
    } else {
        zend_throw_error(zend_ce_argument_count_error, "Too few arguments to function %s%s%s(), %d passed and %s %d expected",
            EX(func)->common.scope ? ZSTR_VAL(EX(func)->common.scope->name) : "",
            EX(func)->common.scope ? "::" : "",
            ZSTR_VAL(EX(func)->common.function_name),
            EX_NUM_ARGS(),
            EX(func)->common.required_num_args == EX(func)->common.num_args ? "exactly" : "at least",
            EX(func)->common.required_num_args);
    }
}
 
ZEND_API ZEND_COLD void zend_verify_return_error(const zend_function *zf, zval *value)
{
    const zend_arg_info *arg_info = &zf->common.arg_info[-1];
    const char *fname, *fsep, *fclass;
    zend_string *need_msg;
    const char *given_msg;
 
    zend_verify_type_error_common(
        zf, arg_info, value, &fname, &fsep, &fclass, &need_msg, &given_msg);
 
    zend_type_error("%s%s%s(): Return value must be of type %s, %s returned",
        fclass, fsep, fname, ZSTR_VAL(need_msg), given_msg);
 
    zend_string_release(need_msg);
}
 
ZEND_API ZEND_COLD void zend_verify_never_error(const zend_function *zf)
{
    zend_string *func_name = get_function_or_method_name(zf);
 
    zend_type_error("%s(): never-returning %s must not implicitly return",
        ZSTR_VAL(func_name), zf->common.scope ? "method" : "function");
 
    zend_string_release(func_name);
}
 
#if ZEND_DEBUG
static ZEND_COLD void zend_verify_internal_return_error(const zend_function *zf, zval *value)
{
    const zend_arg_info *arg_info = &zf->common.arg_info[-1];
    const char *fname, *fsep, *fclass;
    zend_string *need_msg;
    const char *given_msg;
 
    zend_verify_type_error_common(
        zf, arg_info, value, &fname, &fsep, &fclass, &need_msg, &given_msg);
 
    zend_error_noreturn(E_CORE_ERROR, "%s%s%s(): Return value must be of type %s, %s returned",
        fclass, fsep, fname, ZSTR_VAL(need_msg), given_msg);
}
 
static ZEND_COLD void zend_verify_void_return_error(const zend_function *zf, const char *returned_msg, const char *returned_kind)
{
    const char *fname = ZSTR_VAL(zf->common.function_name);
    const char *fsep;
    const char *fclass;
 
    if (zf->common.scope) {
        fsep =  "::";
        fclass = ZSTR_VAL(zf->common.scope->name);
    } else {
        fsep =  "";
        fclass = "";
    }
 
    zend_type_error("%s%s%s() must not return a value, %s%s returned",
        fclass, fsep, fname, returned_msg, returned_kind);
}
 
ZEND_API bool zend_verify_internal_return_type(zend_function *zf, zval *ret)
{
    zend_internal_arg_info *ret_info = zf->internal_function.arg_info - 1;
 
    if (ZEND_TYPE_FULL_MASK(ret_info->type) & MAY_BE_VOID) {
        if (UNEXPECTED(Z_TYPE_P(ret) != IS_NULL)) {
            zend_verify_void_return_error(zf, zend_zval_value_name(ret), "");
            return 0;
        }
        return 1;
    }
 
    if (UNEXPECTED(!zend_check_type(&ret_info->type, ret, /* cache_slot */ NULL, NULL, 1, /* is_internal */ 1))) {
        zend_verify_internal_return_error(zf, ret);
        return 0;
    }
 
    return 1;
}
#endif
 
static ZEND_COLD void zend_verify_missing_return_type(const zend_function *zf)
{
    /* VERIFY_RETURN_TYPE is not emitted for "void" functions, so this is always an error. */
    zend_verify_return_error(zf, NULL);
}
 
static zend_always_inline bool zend_check_class_constant_type(zend_class_constant *c, zval *constant)
{
    ZEND_ASSERT(!Z_ISREF_P(constant));
    if (EXPECTED(ZEND_TYPE_CONTAINS_CODE(c->type, Z_TYPE_P(constant)))) {
        return 1;
    }
 
    if (((ZEND_TYPE_PURE_MASK(c->type) & MAY_BE_STATIC) || ZEND_TYPE_IS_COMPLEX(c->type)) && Z_TYPE_P(constant) == IS_OBJECT
        && zend_check_and_resolve_property_or_class_constant_class_type(c->ce, c->type, Z_OBJCE_P(constant))) {
        return 1;
    }
 
    uint32_t type_mask = ZEND_TYPE_FULL_MASK(c->type);
    ZEND_ASSERT(!(type_mask & (MAY_BE_CALLABLE|MAY_BE_NEVER|MAY_BE_VOID)));
    return zend_verify_scalar_type_hint(type_mask, constant, true, false);
}
 
ZEND_API bool zend_never_inline zend_verify_class_constant_type(zend_class_constant *c, const zend_string *name, zval *constant)
{
    if (!zend_check_class_constant_type(c, constant)) {
        zend_verify_class_constant_type_error(c, name, constant);
        return 0;
    }
 
    return 1;
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_object_as_array(const zend_object *object)
{
    zend_throw_error(NULL, "Cannot use object of type %s as array", ZSTR_VAL(object->ce->name));
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_illegal_array_offset_access(const zval *offset)
{
    zend_illegal_container_offset(ZSTR_KNOWN(ZEND_STR_ARRAY), offset, BP_VAR_RW);
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_illegal_array_offset_isset(const zval *offset)
{
    zend_illegal_container_offset(ZSTR_KNOWN(ZEND_STR_ARRAY), offset, BP_VAR_IS);
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_illegal_array_offset_unset(const zval *offset)
{
    zend_illegal_container_offset(ZSTR_KNOWN(ZEND_STR_ARRAY), offset, BP_VAR_UNSET);
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_illegal_string_offset(const zval *offset, int type)
{
    zend_illegal_container_offset(ZSTR_KNOWN(ZEND_STR_STRING), offset, type);
}
 
static zend_never_inline void zend_assign_to_object_dim(zend_object *obj, zval *dim, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
    obj->handlers->write_dimension(obj, dim, value);
 
    if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
        ZVAL_COPY(EX_VAR(opline->result.var), value);
    }
}
 
static void frameless_observed_call_copy(zend_execute_data *call, uint32_t arg, zval *zv)
{
    if (Z_ISUNDEF_P(zv)) {
        ZVAL_NULL(ZEND_CALL_VAR_NUM(call, arg));
    } else {
        ZVAL_COPY_DEREF(ZEND_CALL_VAR_NUM(call, arg), zv);
    }
}
 
ZEND_API void zend_frameless_observed_call(zend_execute_data *execute_data)
{
    const zend_op *opline = EX(opline);
    uint8_t num_args = ZEND_FLF_NUM_ARGS(opline->opcode);
    zend_function *fbc = ZEND_FLF_FUNC(opline);
    zval *result = EX_VAR(opline->result.var);
 
    zend_execute_data *call = zend_vm_stack_push_call_frame_ex(zend_vm_calc_used_stack(num_args, fbc), ZEND_CALL_NESTED_FUNCTION, fbc, num_args, NULL);
    call->prev_execute_data = execute_data;
 
    switch (num_args) {
        case 3: frameless_observed_call_copy(call, 2, zend_get_zval_ptr(opline+1, (opline+1)->op1_type, &(opline+1)->op1, execute_data)); ZEND_FALLTHROUGH;
        case 2: frameless_observed_call_copy(call, 1, zend_get_zval_ptr(opline, opline->op2_type, &opline->op2, execute_data)); ZEND_FALLTHROUGH;
        case 1: frameless_observed_call_copy(call, 0, zend_get_zval_ptr(opline, opline->op1_type, &opline->op1, execute_data));
    }
 
    EG(current_execute_data) = call;
 
    zend_observer_fcall_begin_prechecked(call, ZEND_OBSERVER_DATA(fbc));
    fbc->internal_function.handler(call, result);
    zend_observer_fcall_end(call, result);
 
    EG(current_execute_data) = execute_data;
 
    if (UNEXPECTED(EG(exception) != NULL)) {
        zend_rethrow_exception(execute_data);
    }
 
    zend_vm_stack_free_args(call);
 
    uint32_t call_info = ZEND_CALL_INFO(call);
    if (UNEXPECTED(call_info & ZEND_CALL_ALLOCATED)) {
        zend_vm_stack_free_call_frame_ex(call_info, call);
    } else {
        EG(vm_stack_top) = (zval*)call;
    }
}
 
 
static zend_always_inline int zend_binary_op(zval *ret, zval *op1, zval *op2 OPLINE_DC)
{
    static const binary_op_type zend_binary_ops[] = {
        add_function,
        sub_function,
        mul_function,
        div_function,
        mod_function,
        shift_left_function,
        shift_right_function,
        concat_function,
        bitwise_or_function,
        bitwise_and_function,
        bitwise_xor_function,
        pow_function
    };
    /* size_t cast makes GCC to better optimize 64-bit PIC code */
    size_t opcode = (size_t)opline->extended_value;
 
    return zend_binary_ops[opcode - ZEND_ADD](ret, op1, op2);
}
 
static zend_never_inline void zend_binary_assign_op_obj_dim(zend_object *obj, zval *property OPLINE_DC EXECUTE_DATA_DC)
{
    zval *value;
    zval *z;
    zval rv, res;
 
    GC_ADDREF(obj);
    if (property && UNEXPECTED(Z_ISUNDEF_P(property))) {
        property = ZVAL_UNDEFINED_OP2();
    }
    value = get_op_data_zval_ptr_r((opline+1)->op1_type, (opline+1)->op1);
    if ((z = obj->handlers->read_dimension(obj, property, BP_VAR_R, &rv)) != NULL) {
 
        if (zend_binary_op(&res, z, value OPLINE_CC) == SUCCESS) {
            obj->handlers->write_dimension(obj, property, &res);
        }
        if (z == &rv) {
            zval_ptr_dtor(&rv);
        }
        if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
            ZVAL_COPY(EX_VAR(opline->result.var), &res);
        }
        zval_ptr_dtor(&res);
    } else {
        zend_use_object_as_array(obj);
        if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
            ZVAL_NULL(EX_VAR(opline->result.var));
        }
    }
    FREE_OP((opline+1)->op1_type, (opline+1)->op1.var);
    if (UNEXPECTED(GC_DELREF(obj) == 0)) {
        zend_objects_store_del(obj);
    }
}
 
static zend_never_inline void zend_binary_assign_op_typed_ref(zend_reference *ref, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
    zval z_copy;
 
    /* Make sure that in-place concatenation is used if the LHS is a string. */
    if (opline->extended_value == ZEND_CONCAT && Z_TYPE(ref->val) == IS_STRING) {
        concat_function(&ref->val, &ref->val, value);
        ZEND_ASSERT(Z_TYPE(ref->val) == IS_STRING && "Concat should return string");
        return;
    }
 
    zend_binary_op(&z_copy, &ref->val, value OPLINE_CC);
    if (EXPECTED(zend_verify_ref_assignable_zval(ref, &z_copy, EX_USES_STRICT_TYPES()))) {
        zval_ptr_dtor(&ref->val);
        ZVAL_COPY_VALUE(&ref->val, &z_copy);
    } else {
        zval_ptr_dtor(&z_copy);
    }
}
 
static zend_never_inline void zend_binary_assign_op_typed_prop(zend_property_info *prop_info, zval *zptr, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
    zval z_copy;
 
    /* Make sure that in-place concatenation is used if the LHS is a string. */
    if (opline->extended_value == ZEND_CONCAT && Z_TYPE_P(zptr) == IS_STRING) {
        concat_function(zptr, zptr, value);
        ZEND_ASSERT(Z_TYPE_P(zptr) == IS_STRING && "Concat should return string");
        return;
    }
 
    zend_binary_op(&z_copy, zptr, value OPLINE_CC);
    if (EXPECTED(zend_verify_property_type(prop_info, &z_copy, EX_USES_STRICT_TYPES()))) {
        zval_ptr_dtor(zptr);
        ZVAL_COPY_VALUE(zptr, &z_copy);
    } else {
        zval_ptr_dtor(&z_copy);
    }
}
 
static zend_never_inline zend_long zend_check_string_offset(zval *dim, int type EXECUTE_DATA_DC)
{
    zend_long offset;
 
try_again:
    switch(Z_TYPE_P(dim)) {
        case IS_LONG:
            return Z_LVAL_P(dim);
        case IS_STRING:
        {
            bool trailing_data = false;
            /* For BC reasons we allow errors so that we can warn on leading numeric string */
            if (IS_LONG == is_numeric_string_ex(Z_STRVAL_P(dim), Z_STRLEN_P(dim), &offset, NULL,
                    /* allow errors */ true, NULL, &trailing_data)) {
                if (UNEXPECTED(trailing_data) && type != BP_VAR_UNSET) {
                    zend_error(E_WARNING, "Illegal string offset \"%s\"", Z_STRVAL_P(dim));
                }
                return offset;
            }
            zend_illegal_string_offset(dim, type);
            return 0;
        }
        case IS_UNDEF:
            ZVAL_UNDEFINED_OP2();
            ZEND_FALLTHROUGH;
        case IS_DOUBLE:
        case IS_NULL:
        case IS_FALSE:
        case IS_TRUE:
            zend_error(E_WARNING, "String offset cast occurred");
            break;
        case IS_REFERENCE:
            dim = Z_REFVAL_P(dim);
            goto try_again;
        default:
            zend_illegal_string_offset(dim, type);
            return 0;
    }
 
    return zval_get_long_func(dim, /* is_strict */ false);
}
 
ZEND_API ZEND_COLD void zend_wrong_string_offset_error(void)
{
    const char *msg = NULL;
    const zend_execute_data *execute_data = EG(current_execute_data);
    const zend_op *opline = execute_data->opline;
 
    if (UNEXPECTED(EG(exception) != NULL)) {
        return;
    }
 
    switch (opline->opcode) {
        case ZEND_ASSIGN_DIM_OP:
            msg = "Cannot use assign-op operators with string offsets";
            break;
        case ZEND_FETCH_LIST_W:
            msg = "Cannot create references to/from string offsets";
            break;
        case ZEND_FETCH_DIM_W:
        case ZEND_FETCH_DIM_RW:
        case ZEND_FETCH_DIM_FUNC_ARG:
        case ZEND_FETCH_DIM_UNSET:
            switch (opline->extended_value) {
                case ZEND_FETCH_DIM_REF:
                    msg = "Cannot create references to/from string offsets";
                    break;
                case ZEND_FETCH_DIM_DIM:
                    msg = "Cannot use string offset as an array";
                    break;
                case ZEND_FETCH_DIM_OBJ:
                    msg = "Cannot use string offset as an object";
                    break;
                case ZEND_FETCH_DIM_INCDEC:
                    msg = "Cannot increment/decrement string offsets";
                    break;
                EMPTY_SWITCH_DEFAULT_CASE();
            }
            break;
        EMPTY_SWITCH_DEFAULT_CASE();
    }
    ZEND_ASSERT(msg != NULL);
    zend_throw_error(NULL, "%s", msg);
}
 
ZEND_COLD static zend_result ZEND_FASTCALL get_deprecation_suffix_from_attribute(HashTable *attributes, zend_class_entry* scope, zend_string **message_suffix)
{
    *message_suffix = ZSTR_EMPTY_ALLOC();
 
    if (!attributes) {
        return SUCCESS;
    }
 
    zend_attribute *deprecated = zend_get_attribute_str(attributes, "deprecated", sizeof("deprecated")-1);
 
    if (!deprecated) {
        return SUCCESS;
    }
 
    if (deprecated->argc == 0) {
        return SUCCESS;
    }
 
    zend_result result = FAILURE;
 
    zend_string *message = ZSTR_EMPTY_ALLOC();
    zend_string *since = ZSTR_EMPTY_ALLOC();
 
    zval obj;
    ZVAL_UNDEF(&obj);
    zval *z;
 
    /* Construct the Deprecated object to correctly handle parameter processing. */
    if (FAILURE == zend_get_attribute_object(&obj, zend_ce_deprecated, deprecated, scope, NULL)) {
        goto out;
    }
 
    /* Extract the $message property. */
    z = zend_read_property_ex(zend_ce_deprecated, Z_OBJ_P(&obj), ZSTR_KNOWN(ZEND_STR_MESSAGE), false, NULL);
    ZEND_ASSERT(z != &EG(uninitialized_zval));
    if (Z_TYPE_P(z) == IS_STRING) {
        message = zend_string_copy(Z_STR_P(z));
    }
 
    /* Extract the $since property. */
    z = zend_read_property_ex(zend_ce_deprecated, Z_OBJ_P(&obj), ZSTR_KNOWN(ZEND_STR_SINCE), false, NULL);
    ZEND_ASSERT(z != &EG(uninitialized_zval));
    if (Z_TYPE_P(z) == IS_STRING) {
        since = zend_string_copy(Z_STR_P(z));
    }
 
    /* Construct the suffix. */
    *message_suffix = zend_strpprintf_unchecked(
        0,
        "%s%S%s%S",
        ZSTR_LEN(since) > 0 ? " since " : "",
        since,
        ZSTR_LEN(message) > 0 ? ", " : "",
        message
    );
 
    result = SUCCESS;
 
 out:
 
    zend_string_release(since);
    zend_string_release(message);
    zval_ptr_dtor(&obj);
 
    return result;
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_deprecated_function(const zend_function *fbc)
{
    zend_string *message_suffix = ZSTR_EMPTY_ALLOC();
 
    if (get_deprecation_suffix_from_attribute(fbc->common.attributes, fbc->common.scope, &message_suffix) == FAILURE) {
        return;
    }
 
    int code = fbc->type == ZEND_INTERNAL_FUNCTION ? E_DEPRECATED : E_USER_DEPRECATED;
 
    if (fbc->common.scope) {
        zend_error_unchecked(code, "Method %s::%s() is deprecated%S",
            ZSTR_VAL(fbc->common.scope->name),
            ZSTR_VAL(fbc->common.function_name),
            message_suffix
        );
    } else {
        zend_error_unchecked(code, "Function %s() is deprecated%S",
            ZSTR_VAL(fbc->common.function_name),
            message_suffix
        );
    }
 
    zend_string_release(message_suffix);
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_deprecated_class_constant(const zend_class_constant *c, const zend_string *constant_name)
{
    zend_string *message_suffix = ZSTR_EMPTY_ALLOC();
 
    if (get_deprecation_suffix_from_attribute(c->attributes, c->ce, &message_suffix) == FAILURE) {
        return;
    }
 
    int code = c->ce->type == ZEND_INTERNAL_CLASS ? E_DEPRECATED : E_USER_DEPRECATED;
    char *type = (ZEND_CLASS_CONST_FLAGS(c) & ZEND_CLASS_CONST_IS_CASE) ? "Enum case" : "Constant";
 
    zend_error_unchecked(code, "%s %s::%s is deprecated%S",
        type,
        ZSTR_VAL(c->ce->name),
        ZSTR_VAL(constant_name),
        message_suffix
    );
 
    zend_string_release(message_suffix);
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_false_to_array_deprecated(void)
{
    zend_error(E_DEPRECATED, "Automatic conversion of false to array is deprecated");
}
 
static zend_never_inline void zend_assign_to_string_offset(zval *str, zval *dim, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
    zend_uchar c;
    size_t string_len;
    zend_long offset;
    zend_string *s;
 
    /* separate string */
    if (Z_REFCOUNTED_P(str) && Z_REFCOUNT_P(str) == 1) {
        s = Z_STR_P(str);
    } else {
        s = zend_string_init(Z_STRVAL_P(str), Z_STRLEN_P(str), 0);
        ZSTR_H(s) = ZSTR_H(Z_STR_P(str));
        if (Z_REFCOUNTED_P(str)) {
            GC_DELREF(Z_STR_P(str));
        }
        ZVAL_NEW_STR(str, s);
    }
 
    if (EXPECTED(Z_TYPE_P(dim) == IS_LONG)) {
        offset = Z_LVAL_P(dim);
    } else {
        /* The string may be destroyed while throwing the notice.
         * Temporarily increase the refcount to detect this situation. */
        GC_ADDREF(s);
        offset = zend_check_string_offset(dim, BP_VAR_W EXECUTE_DATA_CC);
        if (UNEXPECTED(GC_DELREF(s) == 0)) {
            zend_string_efree(s);
            if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
                ZVAL_NULL(EX_VAR(opline->result.var));
            }
            return;
        }
        /* Illegal offset assignment */
        if (UNEXPECTED(EG(exception) != NULL)) {
            if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
                ZVAL_UNDEF(EX_VAR(opline->result.var));
            }
            return;
        }
    }
 
    if (UNEXPECTED(offset < -(zend_long)ZSTR_LEN(s))) {
        /* Error on negative offset */
        zend_error(E_WARNING, "Illegal string offset " ZEND_LONG_FMT, offset);
        if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
            ZVAL_NULL(EX_VAR(opline->result.var));
        }
        return;
    }
 
    if (offset < 0) { /* Handle negative offset */
        offset += (zend_long)ZSTR_LEN(s);
    }
 
    if (UNEXPECTED(Z_TYPE_P(value) != IS_STRING)) {
        zend_string *tmp;
 
        /* The string may be destroyed while throwing the notice.
         * Temporarily increase the refcount to detect this situation. */
        GC_ADDREF(s);
        if (UNEXPECTED(Z_TYPE_P(value) == IS_UNDEF)) {
            zval_undefined_cv((opline+1)->op1.var EXECUTE_DATA_CC);
        }
        /* Convert to string, just the time to pick the 1st byte */
        tmp = zval_try_get_string_func(value);
        if (UNEXPECTED(GC_DELREF(s) == 0)) {
            zend_string_efree(s);
            if (tmp) {
                zend_string_release_ex(tmp, 0);
            }
            if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
                ZVAL_NULL(EX_VAR(opline->result.var));
            }
            return;
        }
        if (UNEXPECTED(!tmp)) {
            if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
                ZVAL_UNDEF(EX_VAR(opline->result.var));
            }
            return;
        }
 
        string_len = ZSTR_LEN(tmp);
        c = (zend_uchar)ZSTR_VAL(tmp)[0];
        zend_string_release_ex(tmp, 0);
    } else {
        string_len = Z_STRLEN_P(value);
        c = (zend_uchar)Z_STRVAL_P(value)[0];
    }
 
    if (UNEXPECTED(string_len != 1)) {
        if (string_len == 0) {
            /* Error on empty input string */
            zend_throw_error(NULL, "Cannot assign an empty string to a string offset");
            if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
                ZVAL_NULL(EX_VAR(opline->result.var));
            }
            return;
        }
 
        /* The string may be destroyed while throwing the notice.
         * Temporarily increase the refcount to detect this situation. */
        GC_ADDREF(s);
        zend_error(E_WARNING, "Only the first byte will be assigned to the string offset");
        if (UNEXPECTED(GC_DELREF(s) == 0)) {
            zend_string_efree(s);
            if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
                ZVAL_NULL(EX_VAR(opline->result.var));
            }
            return;
        }
        /* Illegal offset assignment */
        if (UNEXPECTED(EG(exception) != NULL)) {
            if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
                ZVAL_UNDEF(EX_VAR(opline->result.var));
            }
            return;
        }
    }
 
    if ((size_t)offset >= ZSTR_LEN(s)) {
        /* Extend string if needed */
        zend_long old_len = ZSTR_LEN(s);
        ZVAL_NEW_STR(str, zend_string_extend(s, (size_t)offset + 1, 0));
        memset(Z_STRVAL_P(str) + old_len, ' ', offset - old_len);
        Z_STRVAL_P(str)[offset+1] = 0;
    } else {
        zend_string_forget_hash_val(Z_STR_P(str));
    }
 
    Z_STRVAL_P(str)[offset] = c;
 
    if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
        /* Return the new character */
        ZVAL_CHAR(EX_VAR(opline->result.var), c);
    }
}
 
static zend_property_info *zend_get_prop_not_accepting_double(zend_reference *ref)
{
    zend_property_info *prop;
    ZEND_REF_FOREACH_TYPE_SOURCES(ref, prop) {
        if (!(ZEND_TYPE_FULL_MASK(prop->type) & MAY_BE_DOUBLE)) {
            return prop;
        }
    } ZEND_REF_FOREACH_TYPE_SOURCES_END();
    return NULL;
}
 
static ZEND_COLD zend_long zend_throw_incdec_ref_error(
        zend_reference *ref, zend_property_info *error_prop OPLINE_DC)
{
    zend_string *type_str = zend_type_to_string(error_prop->type);
    if (ZEND_IS_INCREMENT(opline->opcode)) {
        zend_type_error(
            "Cannot increment a reference held by property %s::$%s of type %s past its maximal value",
            ZSTR_VAL(error_prop->ce->name),
            zend_get_unmangled_property_name(error_prop->name),
            ZSTR_VAL(type_str));
        zend_string_release(type_str);
        return ZEND_LONG_MAX;
    } else {
        zend_type_error(
            "Cannot decrement a reference held by property %s::$%s of type %s past its minimal value",
            ZSTR_VAL(error_prop->ce->name),
            zend_get_unmangled_property_name(error_prop->name),
            ZSTR_VAL(type_str));
        zend_string_release(type_str);
        return ZEND_LONG_MIN;
    }
}
 
static ZEND_COLD zend_long zend_throw_incdec_prop_error(zend_property_info *prop OPLINE_DC) {
    zend_string *type_str = zend_type_to_string(prop->type);
    if (ZEND_IS_INCREMENT(opline->opcode)) {
        zend_type_error("Cannot increment property %s::$%s of type %s past its maximal value",
            ZSTR_VAL(prop->ce->name),
            zend_get_unmangled_property_name(prop->name),
            ZSTR_VAL(type_str));
        zend_string_release(type_str);
        return ZEND_LONG_MAX;
    } else {
        zend_type_error("Cannot decrement property %s::$%s of type %s past its minimal value",
            ZSTR_VAL(prop->ce->name),
            zend_get_unmangled_property_name(prop->name),
            ZSTR_VAL(type_str));
        zend_string_release(type_str);
        return ZEND_LONG_MIN;
    }
}
 
static void zend_incdec_typed_ref(zend_reference *ref, zval *copy OPLINE_DC EXECUTE_DATA_DC)
{
    zval tmp;
    zval *var_ptr = &ref->val;
 
    if (!copy) {
        copy = &tmp;
    }
 
    ZVAL_COPY(copy, var_ptr);
 
    if (ZEND_IS_INCREMENT(opline->opcode)) {
        increment_function(var_ptr);
    } else {
        decrement_function(var_ptr);
    }
 
    if (UNEXPECTED(Z_TYPE_P(var_ptr) == IS_DOUBLE) && Z_TYPE_P(copy) == IS_LONG) {
        zend_property_info *error_prop = zend_get_prop_not_accepting_double(ref);
        if (UNEXPECTED(error_prop)) {
            zend_long val = zend_throw_incdec_ref_error(ref, error_prop OPLINE_CC);
            ZVAL_LONG(var_ptr, val);
        }
    } else if (UNEXPECTED(!zend_verify_ref_assignable_zval(ref, var_ptr, EX_USES_STRICT_TYPES()))) {
        zval_ptr_dtor(var_ptr);
        ZVAL_COPY_VALUE(var_ptr, copy);
        ZVAL_UNDEF(copy);
    } else if (copy == &tmp) {
        zval_ptr_dtor(&tmp);
    }
}
 
static void zend_incdec_typed_prop(zend_property_info *prop_info, zval *var_ptr, zval *copy OPLINE_DC EXECUTE_DATA_DC)
{
    zval tmp;
 
    if (!copy) {
        copy = &tmp;
    }
 
    ZVAL_COPY(copy, var_ptr);
 
    if (ZEND_IS_INCREMENT(opline->opcode)) {
        increment_function(var_ptr);
    } else {
        decrement_function(var_ptr);
    }
 
    if (UNEXPECTED(Z_TYPE_P(var_ptr) == IS_DOUBLE) && Z_TYPE_P(copy) == IS_LONG) {
        if (!(ZEND_TYPE_FULL_MASK(prop_info->type) & MAY_BE_DOUBLE)) {
            zend_long val = zend_throw_incdec_prop_error(prop_info OPLINE_CC);
            ZVAL_LONG(var_ptr, val);
        }
    } else if (UNEXPECTED(!zend_verify_property_type(prop_info, var_ptr, EX_USES_STRICT_TYPES()))) {
        zval_ptr_dtor(var_ptr);
        ZVAL_COPY_VALUE(var_ptr, copy);
        ZVAL_UNDEF(copy);
    } else if (copy == &tmp) {
        zval_ptr_dtor(&tmp);
    }
}
 
static void zend_pre_incdec_property_zval(zval *prop, zend_property_info *prop_info OPLINE_DC EXECUTE_DATA_DC)
{
    if (EXPECTED(Z_TYPE_P(prop) == IS_LONG)) {
        if (ZEND_IS_INCREMENT(opline->opcode)) {
            fast_long_increment_function(prop);
        } else {
            fast_long_decrement_function(prop);
        }
        if (UNEXPECTED(Z_TYPE_P(prop) != IS_LONG) && prop_info
                && !(ZEND_TYPE_FULL_MASK(prop_info->type) & MAY_BE_DOUBLE)) {
            zend_long val = zend_throw_incdec_prop_error(prop_info OPLINE_CC);
            ZVAL_LONG(prop, val);
        }
    } else {
        do {
            if (Z_ISREF_P(prop)) {
                zend_reference *ref = Z_REF_P(prop);
                prop = Z_REFVAL_P(prop);
                if (UNEXPECTED(ZEND_REF_HAS_TYPE_SOURCES(ref))) {
                    zend_incdec_typed_ref(ref, NULL OPLINE_CC EXECUTE_DATA_CC);
                    break;
                }
            }
 
            if (prop_info) {
                zend_incdec_typed_prop(prop_info, prop, NULL OPLINE_CC EXECUTE_DATA_CC);
            } else if (ZEND_IS_INCREMENT(opline->opcode)) {
                increment_function(prop);
            } else {
                decrement_function(prop);
            }
        } while (0);
    }
    if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
        ZVAL_COPY(EX_VAR(opline->result.var), prop);
    }
}
 
static void zend_post_incdec_property_zval(zval *prop, zend_property_info *prop_info OPLINE_DC EXECUTE_DATA_DC)
{
    if (EXPECTED(Z_TYPE_P(prop) == IS_LONG)) {
        ZVAL_LONG(EX_VAR(opline->result.var), Z_LVAL_P(prop));
        if (ZEND_IS_INCREMENT(opline->opcode)) {
            fast_long_increment_function(prop);
        } else {
            fast_long_decrement_function(prop);
        }
        if (UNEXPECTED(Z_TYPE_P(prop) != IS_LONG) && prop_info
                && !(ZEND_TYPE_FULL_MASK(prop_info->type) & MAY_BE_DOUBLE)) {
            zend_long val = zend_throw_incdec_prop_error(prop_info OPLINE_CC);
            ZVAL_LONG(prop, val);
        }
    } else {
        if (Z_ISREF_P(prop)) {
            zend_reference *ref = Z_REF_P(prop);
            prop = Z_REFVAL_P(prop);
            if (ZEND_REF_HAS_TYPE_SOURCES(ref)) {
                zend_incdec_typed_ref(ref, EX_VAR(opline->result.var) OPLINE_CC EXECUTE_DATA_CC);
                return;
            }
        }
 
        if (prop_info) {
            zend_incdec_typed_prop(prop_info, prop, EX_VAR(opline->result.var) OPLINE_CC EXECUTE_DATA_CC);
        } else {
            ZVAL_COPY(EX_VAR(opline->result.var), prop);
            if (ZEND_IS_INCREMENT(opline->opcode)) {
                increment_function(prop);
            } else {
                decrement_function(prop);
            }
        }
    }
}
 
static zend_never_inline void zend_post_incdec_overloaded_property(zend_object *object, zend_string *name, void **cache_slot OPLINE_DC EXECUTE_DATA_DC)
{
    zval rv;
    zval *z;
    zval z_copy;
 
    GC_ADDREF(object);
    z =object->handlers->read_property(object, name, BP_VAR_R, cache_slot, &rv);
    if (UNEXPECTED(EG(exception))) {
        OBJ_RELEASE(object);
        ZVAL_UNDEF(EX_VAR(opline->result.var));
        return;
    }
 
    ZVAL_COPY_DEREF(&z_copy, z);
    ZVAL_COPY(EX_VAR(opline->result.var), &z_copy);
    if (ZEND_IS_INCREMENT(opline->opcode)) {
        increment_function(&z_copy);
    } else {
        decrement_function(&z_copy);
    }
    object->handlers->write_property(object, name, &z_copy, cache_slot);
    OBJ_RELEASE(object);
    zval_ptr_dtor(&z_copy);
    if (z == &rv) {
        zval_ptr_dtor(z);
    }
}
 
static zend_never_inline void zend_pre_incdec_overloaded_property(zend_object *object, zend_string *name, void **cache_slot OPLINE_DC EXECUTE_DATA_DC)
{
    zval rv;
    zval *z;
    zval z_copy;
 
    GC_ADDREF(object);
    z = object->handlers->read_property(object, name, BP_VAR_R, cache_slot, &rv);
    if (UNEXPECTED(EG(exception))) {
        OBJ_RELEASE(object);
        if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
            ZVAL_NULL(EX_VAR(opline->result.var));
        }
        return;
    }
 
    ZVAL_COPY_DEREF(&z_copy, z);
    if (ZEND_IS_INCREMENT(opline->opcode)) {
        increment_function(&z_copy);
    } else {
        decrement_function(&z_copy);
    }
    if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
        ZVAL_COPY(EX_VAR(opline->result.var), &z_copy);
    }
    object->handlers->write_property(object, name, &z_copy, cache_slot);
    OBJ_RELEASE(object);
    zval_ptr_dtor(&z_copy);
    if (z == &rv) {
        zval_ptr_dtor(z);
    }
}
 
static zend_never_inline void zend_assign_op_overloaded_property(zend_object *object, zend_string *name, void **cache_slot, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
    zval *z;
    zval rv, res;
 
    GC_ADDREF(object);
    z = object->handlers->read_property(object, name, BP_VAR_R, cache_slot, &rv);
    if (UNEXPECTED(EG(exception))) {
        OBJ_RELEASE(object);
        if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
            ZVAL_UNDEF(EX_VAR(opline->result.var));
        }
        return;
    }
    if (zend_binary_op(&res, z, value OPLINE_CC) == SUCCESS) {
        object->handlers->write_property(object, name, &res, cache_slot);
    }
    if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
        ZVAL_COPY(EX_VAR(opline->result.var), &res);
    }
    if (z == &rv) {
        zval_ptr_dtor(z);
    }
    zval_ptr_dtor(&res);
    OBJ_RELEASE(object);
}
 
/* Utility Functions for Extensions */
static void zend_extension_statement_handler(const zend_extension *extension, zend_execute_data *frame)
{
    if (extension->statement_handler) {
        extension->statement_handler(frame);
    }
}
 
 
static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_execute_data *frame)
{
    if (extension->fcall_begin_handler) {
        extension->fcall_begin_handler(frame);
    }
}
 
 
static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_execute_data *frame)
{
    if (extension->fcall_end_handler) {
        extension->fcall_end_handler(frame);
    }
}
 
 
static zend_always_inline HashTable *zend_get_target_symbol_table(int fetch_type EXECUTE_DATA_DC)
{
    HashTable *ht;
 
    if (EXPECTED(fetch_type & (ZEND_FETCH_GLOBAL_LOCK | ZEND_FETCH_GLOBAL))) {
        ht = &EG(symbol_table);
    } else {
        ZEND_ASSERT(fetch_type & ZEND_FETCH_LOCAL);
        if (!(EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE)) {
            zend_rebuild_symbol_table();
        }
        ht = EX(symbol_table);
    }
    return ht;
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_undefined_offset(zend_long lval)
{
    zend_error(E_WARNING, "Undefined array key " ZEND_LONG_FMT, lval);
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_undefined_index(const zend_string *offset)
{
    zend_error(E_WARNING, "Undefined array key \"%s\"", ZSTR_VAL(offset));
}
 
ZEND_API ZEND_COLD zval* ZEND_FASTCALL zend_undefined_offset_write(HashTable *ht, zend_long lval)
{
    /* The array may be destroyed while throwing the notice.
     * Temporarily increase the refcount to detect this situation. */
    if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
        GC_ADDREF(ht);
    }
    zend_undefined_offset(lval);
    if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && GC_DELREF(ht) != 1) {
        if (!GC_REFCOUNT(ht)) {
            zend_array_destroy(ht);
        }
        return NULL;
    }
    if (EG(exception)) {
        return NULL;
    }
    return zend_hash_index_add_new(ht, lval, &EG(uninitialized_zval));
}
 
ZEND_API ZEND_COLD zval* ZEND_FASTCALL zend_undefined_index_write(HashTable *ht, zend_string *offset)
{
    zval *retval;
 
    /* The array may be destroyed while throwing the notice.
     * Temporarily increase the refcount to detect this situation. */
    if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
        GC_ADDREF(ht);
    }
    /* Key may be released while throwing the undefined index warning. */
    zend_string_addref(offset);
    zend_undefined_index(offset);
    if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && GC_DELREF(ht) != 1) {
        if (!GC_REFCOUNT(ht)) {
            zend_array_destroy(ht);
        }
        retval = NULL;
    } else if (EG(exception)) {
        retval = NULL;
    } else {
        retval = zend_hash_add_new(ht, offset, &EG(uninitialized_zval));
    }
    zend_string_release(offset);
    return retval;
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_undefined_method(const zend_class_entry *ce, const zend_string *method)
{
    zend_throw_error(NULL, "Call to undefined method %s::%s()", ZSTR_VAL(ce->name), ZSTR_VAL(method));
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_invalid_method_call(zval *object, zval *function_name)
{
    zend_throw_error(NULL, "Call to a member function %s() on %s",
        Z_STRVAL_P(function_name), zend_zval_value_name(object));
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_non_static_method_call(const zend_function *fbc)
{
    zend_throw_error(
        zend_ce_error,
        "Non-static method %s::%s() cannot be called statically",
        ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name));
}
 
ZEND_COLD void ZEND_FASTCALL zend_param_must_be_ref(const zend_function *func, uint32_t arg_num)
{
    const char *arg_name = get_function_arg_name(func, arg_num);
 
    zend_error(E_WARNING, "%s%s%s(): Argument #%d%s%s%s must be passed by reference, value given",
        func->common.scope ? ZSTR_VAL(func->common.scope->name) : "",
        func->common.scope ? "::" : "",
        ZSTR_VAL(func->common.function_name),
        arg_num,
        arg_name ? " ($" : "",
        arg_name ? arg_name : "",
        arg_name ? ")" : ""
    );
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_scalar_as_array(void)
{
    zend_throw_error(NULL, "Cannot use a scalar value as an array");
}
 
ZEND_API zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_cannot_add_element(void)
{
    zend_throw_error(NULL, "Cannot add element to the array as the next element is already occupied");
}
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_use_resource_as_offset(const zval *dim)
{
    zend_error(E_WARNING,
        "Resource ID#" ZEND_LONG_FMT " used as offset, casting to integer (" ZEND_LONG_FMT ")",
        Z_RES_HANDLE_P(dim), Z_RES_HANDLE_P(dim));
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_new_element_for_string(void)
{
    zend_throw_error(NULL, "[] operator not supported for strings");
}
 
#ifdef ZEND_CHECK_STACK_LIMIT
ZEND_API zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_call_stack_size_error(void)
{
    size_t max_stack_size = 0;
    if ((uintptr_t) EG(stack_base) > (uintptr_t) EG(stack_limit)) {
        max_stack_size = (size_t) ((uintptr_t) EG(stack_base) - (uintptr_t) EG(stack_limit));
    }
 
    zend_throw_error(NULL, "Maximum call stack size of %zu bytes (zend.max_allowed_stack_size - zend.reserved_stack_size) reached. Infinite recursion?",
        max_stack_size);
}
#endif /* ZEND_CHECK_STACK_LIMIT */
 
static ZEND_COLD void zend_binary_assign_op_dim_slow(zval *container, zval *dim OPLINE_DC EXECUTE_DATA_DC)
{
    if (UNEXPECTED(Z_TYPE_P(container) == IS_STRING)) {
        if (opline->op2_type == IS_UNUSED) {
            zend_use_new_element_for_string();
        } else {
            zend_check_string_offset(dim, BP_VAR_RW EXECUTE_DATA_CC);
            zend_wrong_string_offset_error();
        }
    } else {
        zend_use_scalar_as_array();
    }
}
 
static zend_never_inline uint8_t slow_index_convert(HashTable *ht, const zval *dim, zend_value *value EXECUTE_DATA_DC)
{
    switch (Z_TYPE_P(dim)) {
        case IS_UNDEF: {
            /* The array may be destroyed while throwing the notice.
             * Temporarily increase the refcount to detect this situation. */
            if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
                GC_ADDREF(ht);
            }
            ZVAL_UNDEFINED_OP2();
            if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && !GC_DELREF(ht)) {
                zend_array_destroy(ht);
                return IS_NULL;
            }
            if (EG(exception)) {
                return IS_NULL;
            }
            ZEND_FALLTHROUGH;
        }
        case IS_NULL:
            value->str = ZSTR_EMPTY_ALLOC();
            return IS_STRING;
        case IS_DOUBLE:
            value->lval = zend_dval_to_lval(Z_DVAL_P(dim));
            if (!zend_is_long_compatible(Z_DVAL_P(dim), value->lval)) {
                /* The array may be destroyed while throwing the notice.
                 * Temporarily increase the refcount to detect this situation. */
                if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
                    GC_ADDREF(ht);
                }
                zend_incompatible_double_to_long_error(Z_DVAL_P(dim));
                if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && !GC_DELREF(ht)) {
                    zend_array_destroy(ht);
                    return IS_NULL;
                }
                if (EG(exception)) {
                    return IS_NULL;
                }
            }
            return IS_LONG;
        case IS_RESOURCE:
            /* The array may be destroyed while throwing the notice.
             * Temporarily increase the refcount to detect this situation. */
            if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
                GC_ADDREF(ht);
            }
            zend_use_resource_as_offset(dim);
            if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && !GC_DELREF(ht)) {
                zend_array_destroy(ht);
                return IS_NULL;
            }
            if (EG(exception)) {
                return IS_NULL;
            }
            value->lval = Z_RES_HANDLE_P(dim);
            return IS_LONG;
        case IS_FALSE:
            value->lval = 0;
            return IS_LONG;
        case IS_TRUE:
            value->lval = 1;
            return IS_LONG;
        default:
            zend_illegal_array_offset_access(dim);
            return IS_NULL;
    }
}
 
static zend_never_inline uint8_t slow_index_convert_w(HashTable *ht, const zval *dim, zend_value *value EXECUTE_DATA_DC)
{
    switch (Z_TYPE_P(dim)) {
        case IS_UNDEF: {
            /* The array may be destroyed while throwing the notice.
             * Temporarily increase the refcount to detect this situation. */
            if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
                GC_ADDREF(ht);
            }
            ZVAL_UNDEFINED_OP2();
            if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && GC_DELREF(ht) != 1) {
                if (!GC_REFCOUNT(ht)) {
                    zend_array_destroy(ht);
                }
                return IS_NULL;
            }
            if (EG(exception)) {
                return IS_NULL;
            }
            ZEND_FALLTHROUGH;
        }
        case IS_NULL:
            value->str = ZSTR_EMPTY_ALLOC();
            return IS_STRING;
        case IS_DOUBLE:
            value->lval = zend_dval_to_lval(Z_DVAL_P(dim));
            if (!zend_is_long_compatible(Z_DVAL_P(dim), value->lval)) {
                /* The array may be destroyed while throwing the notice.
                 * Temporarily increase the refcount to detect this situation. */
                if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
                    GC_ADDREF(ht);
                }
                zend_incompatible_double_to_long_error(Z_DVAL_P(dim));
                if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && GC_DELREF(ht) != 1) {
                    if (!GC_REFCOUNT(ht)) {
                        zend_array_destroy(ht);
                    }
                    return IS_NULL;
                }
                if (EG(exception)) {
                    return IS_NULL;
                }
            }
            return IS_LONG;
        case IS_RESOURCE:
            /* The array may be destroyed while throwing the notice.
             * Temporarily increase the refcount to detect this situation. */
            if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
                GC_ADDREF(ht);
            }
            zend_use_resource_as_offset(dim);
            if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && GC_DELREF(ht) != 1) {
                if (!GC_REFCOUNT(ht)) {
                    zend_array_destroy(ht);
                }
                return IS_NULL;
            }
            if (EG(exception)) {
                return IS_NULL;
            }
            value->lval = Z_RES_HANDLE_P(dim);
            return IS_LONG;
        case IS_FALSE:
            value->lval = 0;
            return IS_LONG;
        case IS_TRUE:
            value->lval = 1;
            return IS_LONG;
        default:
            zend_illegal_array_offset_access(dim);
            return IS_NULL;
    }
}
 
static zend_always_inline zval *zend_fetch_dimension_address_inner(HashTable *ht, const zval *dim, int dim_type, int type EXECUTE_DATA_DC)
{
    zval *retval = NULL;
    zend_string *offset_key;
    zend_ulong hval;
 
try_again:
    if (EXPECTED(Z_TYPE_P(dim) == IS_LONG)) {
        hval = Z_LVAL_P(dim);
num_index:
        if (type != BP_VAR_W) {
            ZEND_HASH_INDEX_FIND(ht, hval, retval, num_undef);
            return retval;
num_undef:
            switch (type) {
                case BP_VAR_R:
                    zend_undefined_offset(hval);
                    ZEND_FALLTHROUGH;
                case BP_VAR_UNSET:
                case BP_VAR_IS:
                    retval = &EG(uninitialized_zval);
                    break;
                case BP_VAR_RW:
                    retval = zend_undefined_offset_write(ht, hval);
                    break;
                }
        } else {
            ZEND_HASH_INDEX_LOOKUP(ht, hval, retval);
        }
    } else if (EXPECTED(Z_TYPE_P(dim) == IS_STRING)) {
        offset_key = Z_STR_P(dim);
        if (ZEND_CONST_COND(dim_type != IS_CONST, 1)) {
            if (ZEND_HANDLE_NUMERIC(offset_key, hval)) {
                goto num_index;
            }
        }
str_index:
        if (type != BP_VAR_W) {
            retval = zend_hash_find_ex(ht, offset_key, ZEND_CONST_COND(dim_type == IS_CONST, 0));
            if (!retval) {
                switch (type) {
                    case BP_VAR_R:
                        zend_undefined_index(offset_key);
                        ZEND_FALLTHROUGH;
                    case BP_VAR_UNSET:
                    case BP_VAR_IS:
                        retval = &EG(uninitialized_zval);
                        break;
                    case BP_VAR_RW:
                        retval = zend_undefined_index_write(ht, offset_key);
                        break;
                }
            }
        } else {
            retval = zend_hash_lookup(ht, offset_key);
        }
    } else if (EXPECTED(Z_TYPE_P(dim) == IS_REFERENCE)) {
        dim = Z_REFVAL_P(dim);
        goto try_again;
    } else {
        zend_value val;
        uint8_t t;
 
        if (type != BP_VAR_W && type != BP_VAR_RW) {
            t = slow_index_convert(ht, dim, &val EXECUTE_DATA_CC);
        } else {
            t = slow_index_convert_w(ht, dim, &val EXECUTE_DATA_CC);
        }
        if (t == IS_STRING) {
            offset_key = val.str;
            goto str_index;
        } else if (t == IS_LONG) {
            hval = val.lval;
            goto num_index;
        } else {
            retval = (type == BP_VAR_W || type == BP_VAR_RW) ?
                    NULL : &EG(uninitialized_zval);
        }
    }
    return retval;
}
 
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_W(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
{
    return zend_fetch_dimension_address_inner(ht, dim, IS_TMP_VAR, BP_VAR_W EXECUTE_DATA_CC);
}
 
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_W_CONST(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
{
    return zend_fetch_dimension_address_inner(ht, dim, IS_CONST, BP_VAR_W EXECUTE_DATA_CC);
}
 
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_RW(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
{
    return zend_fetch_dimension_address_inner(ht, dim, IS_TMP_VAR, BP_VAR_RW EXECUTE_DATA_CC);
}
 
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_RW_CONST(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
{
    return zend_fetch_dimension_address_inner(ht, dim, IS_CONST, BP_VAR_RW EXECUTE_DATA_CC);
}
 
static zend_always_inline void zend_fetch_dimension_address(zval *result, zval *container, zval *dim, int dim_type, int type EXECUTE_DATA_DC)
{
    zval *retval;
 
    if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
try_array:
        SEPARATE_ARRAY(container);
fetch_from_array:
        if (dim == NULL) {
            retval = zend_hash_next_index_insert(Z_ARRVAL_P(container), &EG(uninitialized_zval));
            if (UNEXPECTED(retval == NULL)) {
                zend_cannot_add_element();
                ZVAL_UNDEF(result);
                return;
            }
        } else {
            retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type EXECUTE_DATA_CC);
            if (UNEXPECTED(!retval)) {
                /* This may fail without throwing if the array was modified while throwing an
                 * undefined index error. */
                ZVAL_NULL(result);
                return;
            }
        }
        ZVAL_INDIRECT(result, retval);
        return;
    } else if (EXPECTED(Z_TYPE_P(container) == IS_REFERENCE)) {
        zend_reference *ref = Z_REF_P(container);
        container = Z_REFVAL_P(container);
        if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
            goto try_array;
        } else if (EXPECTED(Z_TYPE_P(container) <= IS_FALSE)) {
            if (type != BP_VAR_UNSET) {
                if (ZEND_REF_HAS_TYPE_SOURCES(ref)) {
                    if (UNEXPECTED(!zend_verify_ref_array_assignable(ref))) {
                        ZVAL_UNDEF(result);
                        return;
                    }
                }
                array_init(container);
                goto fetch_from_array;
            } else {
                goto return_null;
            }
        }
    }
    if (UNEXPECTED(Z_TYPE_P(container) == IS_STRING)) {
        if (dim == NULL) {
            zend_use_new_element_for_string();
        } else {
            zend_check_string_offset(dim, type EXECUTE_DATA_CC);
            zend_wrong_string_offset_error();
        }
        ZVAL_UNDEF(result);
    } else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
        zend_object *obj = Z_OBJ_P(container);
        GC_ADDREF(obj);
        if (ZEND_CONST_COND(dim_type == IS_CV, dim != NULL) && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
            dim = ZVAL_UNDEFINED_OP2();
        } else if (dim_type == IS_CONST && Z_EXTRA_P(dim) == ZEND_EXTRA_VALUE) {
            dim++;
        }
        retval = obj->handlers->read_dimension(obj, dim, type, result);
 
        if (UNEXPECTED(retval == &EG(uninitialized_zval))) {
            zend_class_entry *ce = obj->ce;
 
            ZVAL_NULL(result);
            zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ZSTR_VAL(ce->name));
        } else if (EXPECTED(retval && Z_TYPE_P(retval) != IS_UNDEF)) {
            if (!Z_ISREF_P(retval)) {
                if (result != retval) {
                    ZVAL_COPY(result, retval);
                    retval = result;
                }
                if (Z_TYPE_P(retval) != IS_OBJECT) {
                    zend_class_entry *ce = obj->ce;
                    zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ZSTR_VAL(ce->name));
                }
            } else if (UNEXPECTED(Z_REFCOUNT_P(retval) == 1)) {
                ZVAL_UNREF(retval);
            }
            if (result != retval) {
                ZVAL_INDIRECT(result, retval);
            }
        } else {
            ZEND_ASSERT(EG(exception) && "read_dimension() returned NULL without exception");
            ZVAL_UNDEF(result);
        }
        if (UNEXPECTED(GC_DELREF(obj) == 0)) {
            zend_objects_store_del(obj);
        }
    } else {
        if (EXPECTED(Z_TYPE_P(container) <= IS_FALSE)) {
            if (type != BP_VAR_W && UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) {
                ZVAL_UNDEFINED_OP1();
            }
            if (type != BP_VAR_UNSET) {
                HashTable *ht = zend_new_array(0);
                uint8_t old_type = Z_TYPE_P(container);
 
                ZVAL_ARR(container, ht);
                if (UNEXPECTED(old_type == IS_FALSE)) {
                    GC_ADDREF(ht);
                    zend_false_to_array_deprecated();
                    if (UNEXPECTED(GC_DELREF(ht) == 0)) {
                        zend_array_destroy(ht);
                        goto return_null;
                    }
                }
                goto fetch_from_array;
            } else {
                if (UNEXPECTED(Z_TYPE_P(container) == IS_FALSE)) {
                    zend_false_to_array_deprecated();
                }
return_null:
                /* for read-mode only */
                if (ZEND_CONST_COND(dim_type == IS_CV, dim != NULL) && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
                    ZVAL_UNDEFINED_OP2();
                }
                ZVAL_NULL(result);
            }
        } else {
            if (type == BP_VAR_UNSET) {
                zend_throw_error(NULL, "Cannot unset offset in a non-array variable");
                ZVAL_UNDEF(result);
            } else {
                zend_use_scalar_as_array();
                ZVAL_UNDEF(result);
            }
        }
    }
}
 
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_W(zval *container_ptr, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
    zval *result = EX_VAR(opline->result.var);
    zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_W EXECUTE_DATA_CC);
}
 
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_RW(zval *container_ptr, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
    zval *result = EX_VAR(opline->result.var);
    zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_RW EXECUTE_DATA_CC);
}
 
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_UNSET(zval *container_ptr, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
    zval *result = EX_VAR(opline->result.var);
    zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_UNSET EXECUTE_DATA_CC);
}
 
static zend_always_inline void zend_fetch_dimension_address_read(zval *result, zval *container, zval *dim, int dim_type, int type, bool is_list, int slow EXECUTE_DATA_DC)
{
    zval *retval;
 
    if (!slow) {
        if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
try_array:
            retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type EXECUTE_DATA_CC);
            ZVAL_COPY_DEREF(result, retval);
            return;
        } else if (EXPECTED(Z_TYPE_P(container) == IS_REFERENCE)) {
            container = Z_REFVAL_P(container);
            if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
                goto try_array;
            }
        }
    }
    if (!is_list && EXPECTED(Z_TYPE_P(container) == IS_STRING)) {
        zend_string *str = Z_STR_P(container);
        zend_long offset;
 
try_string_offset:
        if (UNEXPECTED(Z_TYPE_P(dim) != IS_LONG)) {
            switch (Z_TYPE_P(dim)) {
                case IS_STRING:
                {
                    bool trailing_data = false;
                    /* For BC reasons we allow errors so that we can warn on leading numeric string */
                    if (IS_LONG == is_numeric_string_ex(Z_STRVAL_P(dim), Z_STRLEN_P(dim), &offset,
                            NULL, /* allow errors */ true, NULL, &trailing_data)) {
                        if (UNEXPECTED(trailing_data)) {
                            zend_error(E_WARNING, "Illegal string offset \"%s\"", Z_STRVAL_P(dim));
                        }
                        goto out;
                    }
                    if (type == BP_VAR_IS) {
                        ZVAL_NULL(result);
                        return;
                    }
                    zend_illegal_string_offset(dim, BP_VAR_R);
                    ZVAL_NULL(result);
                    return;
                }
                case IS_UNDEF:
                    /* The string may be destroyed while throwing the notice.
                     * Temporarily increase the refcount to detect this situation. */
                    if (!(GC_FLAGS(str) & IS_STR_INTERNED)) {
                        GC_ADDREF(str);
                    }
                    ZVAL_UNDEFINED_OP2();
                    if (!(GC_FLAGS(str) & IS_STR_INTERNED) && UNEXPECTED(GC_DELREF(str) == 0)) {
                        zend_string_efree(str);
                        ZVAL_NULL(result);
                        return;
                    }
                    ZEND_FALLTHROUGH;
                case IS_DOUBLE:
                case IS_NULL:
                case IS_FALSE:
                case IS_TRUE:
                    if (type != BP_VAR_IS) {
                        /* The string may be destroyed while throwing the notice.
                         * Temporarily increase the refcount to detect this situation. */
                        if (!(GC_FLAGS(str) & IS_STR_INTERNED)) {
                            GC_ADDREF(str);
                        }
                        zend_error(E_WARNING, "String offset cast occurred");
                        if (!(GC_FLAGS(str) & IS_STR_INTERNED) && UNEXPECTED(GC_DELREF(str) == 0)) {
                            zend_string_efree(str);
                            ZVAL_NULL(result);
                            return;
                        }
                    }
                    break;
                case IS_REFERENCE:
                    dim = Z_REFVAL_P(dim);
                    goto try_string_offset;
                default:
                    zend_illegal_string_offset(dim, BP_VAR_R);
                    ZVAL_NULL(result);
                    return;
            }
 
            offset = zval_get_long_func(dim, /* is_strict */ false);
        } else {
            offset = Z_LVAL_P(dim);
        }
        out:
 
        if (UNEXPECTED(ZSTR_LEN(str) < ((offset < 0) ? -(size_t)offset : ((size_t)offset + 1)))) {
            if (type != BP_VAR_IS) {
                zend_error(E_WARNING, "Uninitialized string offset " ZEND_LONG_FMT, offset);
                ZVAL_EMPTY_STRING(result);
            } else {
                ZVAL_NULL(result);
            }
        } else {
            zend_uchar c;
            zend_long real_offset;
 
            real_offset = (UNEXPECTED(offset < 0)) /* Handle negative offset */
                ? (zend_long)ZSTR_LEN(str) + offset : offset;
            c = (zend_uchar)ZSTR_VAL(str)[real_offset];
 
            ZVAL_CHAR(result, c);
        }
    } else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
        zend_object *obj = Z_OBJ_P(container);
 
        GC_ADDREF(obj);
        if (ZEND_CONST_COND(dim_type == IS_CV, 1) && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
            dim = ZVAL_UNDEFINED_OP2();
        }
        if (dim_type == IS_CONST && Z_EXTRA_P(dim) == ZEND_EXTRA_VALUE) {
            dim++;
        }
        retval = obj->handlers->read_dimension(obj, dim, type, result);
 
        ZEND_ASSERT(result != NULL);
        if (retval) {
            if (result != retval) {
                ZVAL_COPY_DEREF(result, retval);
            } else if (UNEXPECTED(Z_ISREF_P(retval))) {
                zend_unwrap_reference(result);
            }
        } else {
            ZVAL_NULL(result);
        }
        if (UNEXPECTED(GC_DELREF(obj) == 0)) {
            zend_objects_store_del(obj);
        }
    } else {
        if (type != BP_VAR_IS && UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) {
            container = ZVAL_UNDEFINED_OP1();
        }
        if (ZEND_CONST_COND(dim_type == IS_CV, 1) && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
            ZVAL_UNDEFINED_OP2();
        }
        if (!is_list && type != BP_VAR_IS) {
            zend_error(E_WARNING, "Trying to access array offset on %s",
                zend_zval_value_name(container));
        }
        ZVAL_NULL(result);
    }
}
 
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_read_R(zval *container, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
    zval *result = EX_VAR(opline->result.var);
    zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_R, 0, 0 EXECUTE_DATA_CC);
}
 
static zend_never_inline void zend_fetch_dimension_address_read_R_slow(zval *container, zval *dim OPLINE_DC EXECUTE_DATA_DC)
{
    zval *result = EX_VAR(opline->result.var);
    zend_fetch_dimension_address_read(result, container, dim, IS_CV, BP_VAR_R, 0, 1 EXECUTE_DATA_CC);
}
 
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_read_IS(zval *container, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
    zval *result = EX_VAR(opline->result.var);
    zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_IS, 0, 0 EXECUTE_DATA_CC);
}
 
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_LIST_r(zval *container, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
    zval *result = EX_VAR(opline->result.var);
    zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_R, 1, 0 EXECUTE_DATA_CC);
}
 
ZEND_API void zend_fetch_dimension_const(zval *result, zval *container, zval *dim, int type)
{
    zend_fetch_dimension_address_read(result, container, dim, IS_TMP_VAR, type, 0, 0 NO_EXECUTE_DATA_CC);
}
 
static zend_never_inline zval* ZEND_FASTCALL zend_find_array_dim_slow(HashTable *ht, zval *offset EXECUTE_DATA_DC)
{
    zend_ulong hval;
 
    if (Z_TYPE_P(offset) == IS_DOUBLE) {
        hval = zend_dval_to_lval_safe(Z_DVAL_P(offset));
num_idx:
        return zend_hash_index_find(ht, hval);
    } else if (Z_TYPE_P(offset) == IS_NULL) {
str_idx:
        return zend_hash_find_known_hash(ht, ZSTR_EMPTY_ALLOC());
    } else if (Z_TYPE_P(offset) == IS_FALSE) {
        hval = 0;
        goto num_idx;
    } else if (Z_TYPE_P(offset) == IS_TRUE) {
        hval = 1;
        goto num_idx;
    } else if (Z_TYPE_P(offset) == IS_RESOURCE) {
        zend_use_resource_as_offset(offset);
        hval = Z_RES_HANDLE_P(offset);
        goto num_idx;
    } else if (/*OP2_TYPE == IS_CV &&*/ Z_TYPE_P(offset) == IS_UNDEF) {
        ZVAL_UNDEFINED_OP2();
        goto str_idx;
    } else {
        zend_illegal_array_offset_isset(offset);
        return NULL;
    }
}
 
static zend_never_inline bool ZEND_FASTCALL zend_isset_dim_slow(zval *container, zval *offset EXECUTE_DATA_DC)
{
    if (/*OP2_TYPE == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(offset) == IS_UNDEF)) {
        offset = ZVAL_UNDEFINED_OP2();
    }
 
    if (/*OP1_TYPE != IS_CONST &&*/ EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
        return Z_OBJ_HT_P(container)->has_dimension(Z_OBJ_P(container), offset, 0);
    } else if (EXPECTED(Z_TYPE_P(container) == IS_STRING)) { /* string offsets */
        zend_long lval;
 
        if (EXPECTED(Z_TYPE_P(offset) == IS_LONG)) {
            lval = Z_LVAL_P(offset);
str_offset:
            if (UNEXPECTED(lval < 0)) { /* Handle negative offset */
                lval += (zend_long)Z_STRLEN_P(container);
            }
            if (EXPECTED(lval >= 0) && (size_t)lval < Z_STRLEN_P(container)) {
                return 1;
            } else {
                return 0;
            }
        } else {
            /*if (OP2_TYPE & (IS_CV|IS_VAR)) {*/
                ZVAL_DEREF(offset);
            /*}*/
            if (Z_TYPE_P(offset) < IS_STRING /* simple scalar types */
                    || (Z_TYPE_P(offset) == IS_STRING /* or numeric string */
                        && IS_LONG == is_numeric_string(Z_STRVAL_P(offset), Z_STRLEN_P(offset), NULL, NULL, 0))) {
                lval = zval_get_long_ex(offset, /* is_strict */ true);
                goto str_offset;
            }
            return 0;
        }
    } else {
        return 0;
    }
}
 
static zend_never_inline bool ZEND_FASTCALL zend_isempty_dim_slow(zval *container, zval *offset EXECUTE_DATA_DC)
{
    if (/*OP2_TYPE == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(offset) == IS_UNDEF)) {
        offset = ZVAL_UNDEFINED_OP2();
    }
 
    if (/*OP1_TYPE != IS_CONST &&*/ EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
        return !Z_OBJ_HT_P(container)->has_dimension(Z_OBJ_P(container), offset, 1);
    } else if (EXPECTED(Z_TYPE_P(container) == IS_STRING)) { /* string offsets */
        zend_long lval;
 
        if (EXPECTED(Z_TYPE_P(offset) == IS_LONG)) {
            lval = Z_LVAL_P(offset);
str_offset:
            if (UNEXPECTED(lval < 0)) { /* Handle negative offset */
                lval += (zend_long)Z_STRLEN_P(container);
            }
            if (EXPECTED(lval >= 0) && (size_t)lval < Z_STRLEN_P(container)) {
                return (Z_STRVAL_P(container)[lval] == '0');
            } else {
                return 1;
            }
        } else {
            /*if (OP2_TYPE & (IS_CV|IS_VAR)) {*/
                ZVAL_DEREF(offset);
            /*}*/
            if (Z_TYPE_P(offset) < IS_STRING /* simple scalar types */
                    || (Z_TYPE_P(offset) == IS_STRING /* or numeric string */
                        && IS_LONG == is_numeric_string(Z_STRVAL_P(offset), Z_STRLEN_P(offset), NULL, NULL, 0))) {
                lval = zval_get_long_ex(offset, /* is_strict */ true);
                goto str_offset;
            }
            return 1;
        }
    } else {
        return 1;
    }
}
 
static zend_never_inline bool ZEND_FASTCALL zend_array_key_exists_fast(HashTable *ht, zval *key OPLINE_DC EXECUTE_DATA_DC)
{
    zend_string *str;
    zend_ulong hval;
 
try_again:
    if (EXPECTED(Z_TYPE_P(key) == IS_STRING)) {
        str = Z_STR_P(key);
        if (ZEND_HANDLE_NUMERIC(str, hval)) {
            goto num_key;
        }
str_key:
        return zend_hash_exists(ht, str);
    } else if (EXPECTED(Z_TYPE_P(key) == IS_LONG)) {
        hval = Z_LVAL_P(key);
num_key:
        return zend_hash_index_exists(ht, hval);
    } else if (EXPECTED(Z_ISREF_P(key))) {
        key = Z_REFVAL_P(key);
        goto try_again;
    } else if (Z_TYPE_P(key) == IS_DOUBLE) {
        hval = zend_dval_to_lval_safe(Z_DVAL_P(key));
        goto num_key;
    } else if (Z_TYPE_P(key) == IS_FALSE) {
        hval = 0;
        goto num_key;
    } else if (Z_TYPE_P(key) == IS_TRUE) {
        hval = 1;
        goto num_key;
    } else if (Z_TYPE_P(key) == IS_RESOURCE) {
        zend_use_resource_as_offset(key);
        hval = Z_RES_HANDLE_P(key);
        goto num_key;
    } else if (Z_TYPE_P(key) <= IS_NULL) {
        if (UNEXPECTED(Z_TYPE_P(key) == IS_UNDEF)) {
            ZVAL_UNDEFINED_OP1();
        }
        str = ZSTR_EMPTY_ALLOC();
        goto str_key;
    } else {
        zend_illegal_array_offset_access(key);
        return 0;
    }
}
 
static ZEND_COLD void ZEND_FASTCALL zend_array_key_exists_error(
        zval *subject, zval *key OPLINE_DC EXECUTE_DATA_DC)
{
    if (Z_TYPE_P(key) == IS_UNDEF) {
        ZVAL_UNDEFINED_OP1();
    }
    if (Z_TYPE_P(subject) == IS_UNDEF) {
        ZVAL_UNDEFINED_OP2();
    }
    if (!EG(exception)) {
        zend_type_error("array_key_exists(): Argument #2 ($array) must be of type array, %s given",
            zend_zval_value_name(subject));
    }
}
 
static zend_always_inline bool promotes_to_array(zval *val) {
    return Z_TYPE_P(val) <= IS_FALSE
        || (Z_ISREF_P(val) && Z_TYPE_P(Z_REFVAL_P(val)) <= IS_FALSE);
}
 
static zend_always_inline bool check_type_array_assignable(zend_type type) {
    if (!ZEND_TYPE_IS_SET(type)) {
        return 1;
    }
    return (ZEND_TYPE_FULL_MASK(type) & MAY_BE_ARRAY) != 0;
}
 
/* Checks whether an array can be assigned to the reference. Throws error if not assignable. */
ZEND_API bool zend_verify_ref_array_assignable(zend_reference *ref) {
    zend_property_info *prop;
    ZEND_ASSERT(ZEND_REF_HAS_TYPE_SOURCES(ref));
    ZEND_REF_FOREACH_TYPE_SOURCES(ref, prop) {
        if (!check_type_array_assignable(prop->type)) {
            zend_throw_auto_init_in_ref_error(prop);
            return 0;
        }
    } ZEND_REF_FOREACH_TYPE_SOURCES_END();
    return 1;
}
 
static zend_never_inline bool zend_handle_fetch_obj_flags(
        zval *result, zval *ptr, zend_object *obj, zend_property_info *prop_info, uint32_t flags)
{
    switch (flags) {
        case ZEND_FETCH_DIM_WRITE:
            if (promotes_to_array(ptr)) {
                if (!prop_info) {
                    break;
                }
                if (!check_type_array_assignable(prop_info->type)) {
                    zend_throw_auto_init_in_prop_error(prop_info);
                    if (result) ZVAL_ERROR(result);
                    return 0;
                }
            }
            break;
        case ZEND_FETCH_REF:
            if (Z_TYPE_P(ptr) != IS_REFERENCE) {
                if (!prop_info) {
                    break;
                }
                if (Z_TYPE_P(ptr) == IS_UNDEF) {
                    if (!ZEND_TYPE_ALLOW_NULL(prop_info->type)) {
                        zend_throw_access_uninit_prop_by_ref_error(prop_info);
                        if (result) ZVAL_ERROR(result);
                        return 0;
                    }
                    ZVAL_NULL(ptr);
                }
 
                ZVAL_NEW_REF(ptr, ptr);
                ZEND_REF_ADD_TYPE_SOURCE(Z_REF_P(ptr), prop_info);
            }
            break;
        EMPTY_SWITCH_DEFAULT_CASE()
    }
    return 1;
}
 
static zend_always_inline void zend_fetch_property_address(zval *result, zval *container, uint32_t container_op_type, zval *prop_ptr, uint32_t prop_op_type, void **cache_slot, int type, uint32_t flags, zend_property_info **prop_info_p OPLINE_DC EXECUTE_DATA_DC)
{
    zval *ptr;
    zend_object *zobj;
    zend_string *name, *tmp_name;
    void *_cache_slot[3] = {0};
    if (prop_op_type != IS_CONST) {
        cache_slot = _cache_slot;
    } else {
        ZEND_ASSERT(cache_slot);
    }
 
    if (container_op_type != IS_UNUSED && UNEXPECTED(Z_TYPE_P(container) != IS_OBJECT)) {
        do {
            if (Z_ISREF_P(container) && Z_TYPE_P(Z_REFVAL_P(container)) == IS_OBJECT) {
                container = Z_REFVAL_P(container);
                break;
            }
 
            if (container_op_type == IS_CV
             && type != BP_VAR_W
             && UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) {
                ZVAL_UNDEFINED_OP1();
            }
 
            /* this should modify object only if it's empty */
            if (type == BP_VAR_UNSET) {
                ZVAL_NULL(result);
                return;
            }
 
            zend_throw_non_object_error(container, prop_ptr OPLINE_CC EXECUTE_DATA_CC);
            ZVAL_ERROR(result);
            return;
        } while (0);
    }
 
    zobj = Z_OBJ_P(container);
    if (prop_op_type == IS_CONST &&
        EXPECTED(zobj->ce == CACHED_PTR_EX(cache_slot))) {
        uintptr_t prop_offset = (uintptr_t)CACHED_PTR_EX(cache_slot + 1);
        if (prop_info_p) {
            *prop_info_p = CACHED_PTR_EX(cache_slot + 2);
        }
 
        if (EXPECTED(IS_VALID_PROPERTY_OFFSET(prop_offset))) {
            ptr = OBJ_PROP(zobj, prop_offset);
            if (EXPECTED(Z_TYPE_P(ptr) != IS_UNDEF)) {
                ZVAL_INDIRECT(result, ptr);
                zend_property_info *prop_info = CACHED_PTR_EX(cache_slot + 2);
                if (prop_info) {
                    if (UNEXPECTED(prop_info->flags & (ZEND_ACC_READONLY|ZEND_ACC_PPP_SET_MASK))
                     && ((prop_info->flags & ZEND_ACC_READONLY) || !zend_asymmetric_property_has_set_access(prop_info))) {
                        /* For objects, W/RW/UNSET fetch modes might not actually modify object.
                         * Similar as with magic __get() allow them, but return the value as a copy
                         * to make sure no actual modification is possible. */
                        ZEND_ASSERT(type == BP_VAR_W || type == BP_VAR_RW || type == BP_VAR_UNSET);
                        if (Z_TYPE_P(ptr) == IS_OBJECT) {
                            ZVAL_COPY(result, ptr);
                        } else {
                            if (prop_info->flags & ZEND_ACC_READONLY) {
                                zend_readonly_property_indirect_modification_error(prop_info);
                            } else {
                                zend_asymmetric_visibility_property_modification_error(prop_info, "indirectly modify");
                            }
                            ZVAL_ERROR(result);
                        }
                        return;
                    }
                    flags &= ZEND_FETCH_OBJ_FLAGS;
                    if (flags) {
                        zend_handle_fetch_obj_flags(result, ptr, NULL, prop_info, flags);
                    }
                }
                return;
            }
        } else if (UNEXPECTED(IS_HOOKED_PROPERTY_OFFSET(prop_offset))) {
            /* Fall through to read_property for hooks. */
        } else if (EXPECTED(zobj->properties != NULL)) {
            ZEND_ASSERT(IS_DYNAMIC_PROPERTY_OFFSET(prop_offset));
            if (UNEXPECTED(GC_REFCOUNT(zobj->properties) > 1)) {
                if (EXPECTED(!(GC_FLAGS(zobj->properties) & IS_ARRAY_IMMUTABLE))) {
                    GC_DELREF(zobj->properties);
                }
                zobj->properties = zend_array_dup(zobj->properties);
            }
            ptr = zend_hash_find_known_hash(zobj->properties, Z_STR_P(prop_ptr));
            if (EXPECTED(ptr)) {
                ZVAL_INDIRECT(result, ptr);
                return;
            }
        }
    } else if (prop_op_type == IS_CONST) {
        /* CE mismatch, make cache slot consistent */
        cache_slot[0] = cache_slot[1] = cache_slot[2] = NULL;
    }
 
    /* Pointer on property callback is required */
    ZEND_ASSERT(zobj->handlers->get_property_ptr_ptr != NULL);
 
    if (prop_op_type == IS_CONST) {
        name = Z_STR_P(prop_ptr);
    } else {
        name = zval_get_tmp_string(prop_ptr, &tmp_name);
    }
    ptr = zobj->handlers->get_property_ptr_ptr(zobj, name, type, cache_slot);
    if (NULL == ptr) {
        ptr = zobj->handlers->read_property(zobj, name, type, cache_slot, result);
        if (ptr == result) {
            if (UNEXPECTED(Z_ISREF_P(ptr) && Z_REFCOUNT_P(ptr) == 1)) {
                ZVAL_UNREF(ptr);
            }
            goto end;
        }
        if (UNEXPECTED(EG(exception))) {
            ZVAL_ERROR(result);
            goto end;
        }
    } else if (UNEXPECTED(Z_ISERROR_P(ptr))) {
        ZVAL_ERROR(result);
        goto end;
    }
 
    ZVAL_INDIRECT(result, ptr);
    flags &= ZEND_FETCH_OBJ_FLAGS;
    if (flags) {
        zend_property_info *prop_info = CACHED_PTR_EX(cache_slot + 2);
        if (prop_info && ZEND_TYPE_IS_SET(prop_info->type)) {
            if (UNEXPECTED(!zend_handle_fetch_obj_flags(result, ptr, NULL, prop_info, flags))) {
                goto end;
            }
        }
    }
 
end:
    if (prop_info_p) {
        *prop_info_p = CACHED_PTR_EX(cache_slot + 2);
    }
    if (prop_op_type != IS_CONST) {
        zend_tmp_string_release(tmp_name);
    }
}
 
static zend_always_inline void zend_assign_to_property_reference(zval *container, uint32_t container_op_type, zval *prop_ptr, uint32_t prop_op_type, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
    zval variable, *variable_ptr = &variable;
    void **cache_addr = (prop_op_type == IS_CONST) ? CACHE_ADDR(opline->extended_value & ~ZEND_RETURNS_FUNCTION) : NULL;
    zend_refcounted *garbage = NULL;
    zend_property_info *prop_info = NULL;
 
    zend_fetch_property_address(variable_ptr, container, container_op_type, prop_ptr, prop_op_type,
        cache_addr, BP_VAR_W, 0, &prop_info OPLINE_CC EXECUTE_DATA_CC);
 
    if (EXPECTED(Z_TYPE_P(variable_ptr) == IS_INDIRECT)) {
        variable_ptr = Z_INDIRECT_P(variable_ptr);
        if (/*OP_DATA_TYPE == IS_VAR &&*/
                   (opline->extended_value & ZEND_RETURNS_FUNCTION) &&
                   UNEXPECTED(!Z_ISREF_P(value_ptr))) {
 
            variable_ptr = zend_wrong_assign_to_variable_reference(
                variable_ptr, value_ptr, &garbage OPLINE_CC EXECUTE_DATA_CC);
        } else if (prop_info && ZEND_TYPE_IS_SET(prop_info->type)) {
            variable_ptr = zend_assign_to_typed_property_reference(prop_info, variable_ptr, value_ptr, &garbage EXECUTE_DATA_CC);
        } else {
            zend_assign_to_variable_reference(variable_ptr, value_ptr, &garbage);
        }
    } else if (Z_ISERROR_P(variable_ptr)) {
        variable_ptr = &EG(uninitialized_zval);
    } else {
        zend_throw_error(NULL, "Cannot assign by reference to overloaded object");
        zval_ptr_dtor(&variable);
        variable_ptr = &EG(uninitialized_zval);
    }
 
    if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
        ZVAL_COPY(EX_VAR(opline->result.var), variable_ptr);
    }
    if (garbage) {
        GC_DTOR(garbage);
    }
}
 
static zend_never_inline void zend_assign_to_property_reference_this_const(zval *container, zval *prop_ptr, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
    zend_assign_to_property_reference(container, IS_UNUSED, prop_ptr, IS_CONST, value_ptr
        OPLINE_CC EXECUTE_DATA_CC);
}
 
static zend_never_inline void zend_assign_to_property_reference_var_const(zval *container, zval *prop_ptr, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
    zend_assign_to_property_reference(container, IS_VAR, prop_ptr, IS_CONST, value_ptr
        OPLINE_CC EXECUTE_DATA_CC);
}
 
static zend_never_inline void zend_assign_to_property_reference_this_var(zval *container, zval *prop_ptr, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
    zend_assign_to_property_reference(container, IS_UNUSED, prop_ptr, IS_VAR, value_ptr
        OPLINE_CC EXECUTE_DATA_CC);
}
 
static zend_never_inline void zend_assign_to_property_reference_var_var(zval *container, zval *prop_ptr, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
    zend_assign_to_property_reference(container, IS_VAR, prop_ptr, IS_VAR, value_ptr
        OPLINE_CC EXECUTE_DATA_CC);
}
 
static zend_never_inline zend_result zend_fetch_static_property_address_ex(zval **retval, zend_property_info **prop_info, uint32_t cache_slot, int fetch_type OPLINE_DC EXECUTE_DATA_DC) {
    zend_string *name;
    zend_class_entry *ce;
    zend_property_info *property_info;
 
    uint8_t op1_type = opline->op1_type, op2_type = opline->op2_type;
 
    if (EXPECTED(op2_type == IS_CONST)) {
        zval *class_name = RT_CONSTANT(opline, opline->op2);
 
        ZEND_ASSERT(op1_type != IS_CONST || CACHED_PTR(cache_slot) == NULL);
 
        if (EXPECTED((ce = CACHED_PTR(cache_slot)) == NULL)) {
            ce = zend_fetch_class_by_name(Z_STR_P(class_name), Z_STR_P(class_name + 1), ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION);
            if (UNEXPECTED(ce == NULL)) {
                FREE_OP(op1_type, opline->op1.var);
                return FAILURE;
            }
            if (UNEXPECTED(op1_type != IS_CONST)) {
                CACHE_PTR(cache_slot, ce);
            }
        }
    } else {
        if (EXPECTED(op2_type == IS_UNUSED)) {
            ce = zend_fetch_class(NULL, opline->op2.num);
            if (UNEXPECTED(ce == NULL)) {
                FREE_OP(op1_type, opline->op1.var);
                return FAILURE;
            }
        } else {
            ce = Z_CE_P(EX_VAR(opline->op2.var));
        }
        if (EXPECTED(op1_type == IS_CONST) && EXPECTED(CACHED_PTR(cache_slot) == ce)) {
            *retval = CACHED_PTR(cache_slot + sizeof(void *));
            *prop_info = CACHED_PTR(cache_slot + sizeof(void *) * 2);
            return SUCCESS;
        }
    }
 
    if (EXPECTED(op1_type == IS_CONST)) {
        name = Z_STR_P(RT_CONSTANT(opline, opline->op1));
        *retval = zend_std_get_static_property_with_info(ce, name, fetch_type, &property_info);
    } else {
        zend_string *tmp_name;
        zval *varname = get_zval_ptr_undef(opline->op1_type, opline->op1, BP_VAR_R);
        if (EXPECTED(Z_TYPE_P(varname) == IS_STRING)) {
            name = Z_STR_P(varname);
            tmp_name = NULL;
        } else {
            if (op1_type == IS_CV && UNEXPECTED(Z_TYPE_P(varname) == IS_UNDEF)) {
                zval_undefined_cv(opline->op1.var EXECUTE_DATA_CC);
            }
            name = zval_get_tmp_string(varname, &tmp_name);
        }
        *retval = zend_std_get_static_property_with_info(ce, name, fetch_type, &property_info);
 
        zend_tmp_string_release(tmp_name);
 
        FREE_OP(op1_type, opline->op1.var);
    }
 
    if (UNEXPECTED(*retval == NULL)) {
        return FAILURE;
    }
 
    *prop_info = property_info;
 
    if (EXPECTED(op1_type == IS_CONST)
            && EXPECTED(!(property_info->ce->ce_flags & ZEND_ACC_TRAIT))) {
        CACHE_POLYMORPHIC_PTR(cache_slot, ce, *retval);
        CACHE_PTR(cache_slot + sizeof(void *) * 2, property_info);
    }
 
    return SUCCESS;
}
 
 
static zend_always_inline zend_result zend_fetch_static_property_address(zval **retval, zend_property_info **prop_info, uint32_t cache_slot, int fetch_type, int flags OPLINE_DC EXECUTE_DATA_DC) {
    zend_property_info *property_info;
 
    if (opline->op1_type == IS_CONST
     && (opline->op2_type == IS_CONST
      || (opline->op2_type == IS_UNUSED
       && ((opline->op2.num & ZEND_FETCH_CLASS_MASK) == ZEND_FETCH_CLASS_SELF
        || (opline->op2.num & ZEND_FETCH_CLASS_MASK) == ZEND_FETCH_CLASS_PARENT)))
     && EXPECTED(CACHED_PTR(cache_slot) != NULL)) {
        *retval = CACHED_PTR(cache_slot + sizeof(void *));
        property_info = CACHED_PTR(cache_slot + sizeof(void *) * 2);
 
        if ((fetch_type == BP_VAR_R || fetch_type == BP_VAR_RW)
                && UNEXPECTED(Z_TYPE_P(*retval) == IS_UNDEF)
                && ZEND_TYPE_IS_SET(property_info->type)) {
            zend_throw_error(NULL, "Typed static property %s::$%s must not be accessed before initialization",
                ZSTR_VAL(property_info->ce->name),
                zend_get_unmangled_property_name(property_info->name));
            return FAILURE;
        }
    } else {
        zend_result success;
        success = zend_fetch_static_property_address_ex(retval, &property_info, cache_slot, fetch_type OPLINE_CC EXECUTE_DATA_CC);
        if (UNEXPECTED(success != SUCCESS)) {
            return FAILURE;
        }
    }
 
    flags &= ZEND_FETCH_OBJ_FLAGS;
    if (flags && ZEND_TYPE_IS_SET(property_info->type)) {
        zend_handle_fetch_obj_flags(NULL, *retval, NULL, property_info, flags);
    }
 
    if (prop_info) {
        *prop_info = property_info;
    }
 
    return SUCCESS;
}
 
ZEND_API ZEND_COLD void zend_throw_ref_type_error_type(const zend_property_info *prop1, const zend_property_info *prop2, const zval *zv) {
    zend_string *type1_str = zend_type_to_string(prop1->type);
    zend_string *type2_str = zend_type_to_string(prop2->type);
    zend_type_error("Reference with value of type %s held by property %s::$%s of type %s is not compatible with property %s::$%s of type %s",
        zend_zval_type_name(zv),
        ZSTR_VAL(prop1->ce->name),
        zend_get_unmangled_property_name(prop1->name),
        ZSTR_VAL(type1_str),
        ZSTR_VAL(prop2->ce->name),
        zend_get_unmangled_property_name(prop2->name),
        ZSTR_VAL(type2_str)
    );
    zend_string_release(type1_str);
    zend_string_release(type2_str);
}
 
ZEND_API ZEND_COLD void zend_throw_ref_type_error_zval(const zend_property_info *prop, const zval *zv) {
    zend_string *type_str = zend_type_to_string(prop->type);
    zend_type_error("Cannot assign %s to reference held by property %s::$%s of type %s",
        zend_zval_value_name(zv),
        ZSTR_VAL(prop->ce->name),
        zend_get_unmangled_property_name(prop->name),
        ZSTR_VAL(type_str)
    );
    zend_string_release(type_str);
}
 
ZEND_API ZEND_COLD void zend_throw_conflicting_coercion_error(const zend_property_info *prop1, const zend_property_info *prop2, const zval *zv) {
    zend_string *type1_str = zend_type_to_string(prop1->type);
    zend_string *type2_str = zend_type_to_string(prop2->type);
    zend_type_error("Cannot assign %s to reference held by property %s::$%s of type %s and property %s::$%s of type %s, as this would result in an inconsistent type conversion",
        zend_zval_value_name(zv),
        ZSTR_VAL(prop1->ce->name),
        zend_get_unmangled_property_name(prop1->name),
        ZSTR_VAL(type1_str),
        ZSTR_VAL(prop2->ce->name),
        zend_get_unmangled_property_name(prop2->name),
        ZSTR_VAL(type2_str)
    );
    zend_string_release(type1_str);
    zend_string_release(type2_str);
}
 
/* 1: valid, 0: invalid, -1: may be valid after type coercion */
static zend_always_inline int i_zend_verify_type_assignable_zval(
        const zend_property_info *info, const zval *zv, bool strict) {
    zend_type type = info->type;
    uint32_t type_mask;
    uint8_t zv_type = Z_TYPE_P(zv);
 
    if (EXPECTED(ZEND_TYPE_CONTAINS_CODE(type, zv_type))) {
        return 1;
    }
 
    if (ZEND_TYPE_IS_COMPLEX(type) && zv_type == IS_OBJECT
            && zend_check_and_resolve_property_or_class_constant_class_type(info->ce, info->type, Z_OBJCE_P(zv))) {
        return 1;
    }
 
    type_mask = ZEND_TYPE_FULL_MASK(type);
    ZEND_ASSERT(!(type_mask & (MAY_BE_CALLABLE|MAY_BE_STATIC)));
 
    /* SSTH Exception: IS_LONG may be accepted as IS_DOUBLE (converted) */
    if (strict) {
        if ((type_mask & MAY_BE_DOUBLE) && zv_type == IS_LONG) {
            return -1;
        }
        return 0;
    }
 
    /* NULL may be accepted only by nullable hints (this is already checked) */
    if (zv_type == IS_NULL) {
        return 0;
    }
 
    /* Does not contain any type to which a coercion is possible */
    if (!(type_mask & (MAY_BE_LONG|MAY_BE_DOUBLE|MAY_BE_STRING))
            && (type_mask & MAY_BE_BOOL) != MAY_BE_BOOL) {
        return 0;
    }
 
    /* Coercion may be necessary, check separately */
    return -1;
}
 
ZEND_API bool ZEND_FASTCALL zend_verify_ref_assignable_zval(zend_reference *ref, zval *zv, bool strict)
{
    const zend_property_info *prop;
 
    /* The value must satisfy each property type, and coerce to the same value for each property
     * type. Remember the first coerced type and value we've seen for this purpose. */
    const zend_property_info *first_prop = NULL;
    zval coerced_value;
    ZVAL_UNDEF(&coerced_value);
 
    ZEND_ASSERT(Z_TYPE_P(zv) != IS_REFERENCE);
    ZEND_REF_FOREACH_TYPE_SOURCES(ref, prop) {
        int result = i_zend_verify_type_assignable_zval(prop, zv, strict);
        if (result == 0) {
type_error:
            zend_throw_ref_type_error_zval(prop, zv);
            zval_ptr_dtor(&coerced_value);
            return 0;
        }
 
        if (result < 0) {
            if (!first_prop) {
                first_prop = prop;
                ZVAL_COPY(&coerced_value, zv);
                if (!zend_verify_weak_scalar_type_hint(
                        ZEND_TYPE_FULL_MASK(prop->type), &coerced_value)) {
                    goto type_error;
                }
            } else if (Z_ISUNDEF(coerced_value)) {
                /* A previous property did not require coercion, but this one does,
                 * so they are incompatible. */
                goto conflicting_coercion_error;
            } else {
                zval tmp;
                ZVAL_COPY(&tmp, zv);
                if (!zend_verify_weak_scalar_type_hint(ZEND_TYPE_FULL_MASK(prop->type), &tmp)) {
                    zval_ptr_dtor(&tmp);
                    goto type_error;
                }
                if (!zend_is_identical(&coerced_value, &tmp)) {
                    zval_ptr_dtor(&tmp);
                    goto conflicting_coercion_error;
                }
                zval_ptr_dtor(&tmp);
            }
        } else {
            if (!first_prop) {
                first_prop = prop;
            } else if (!Z_ISUNDEF(coerced_value)) {
                /* A previous property required coercion, but this one doesn't,
                 * so they are incompatible. */
conflicting_coercion_error:
                zend_throw_conflicting_coercion_error(first_prop, prop, zv);
                zval_ptr_dtor(&coerced_value);
                return 0;
            }
        }
    } ZEND_REF_FOREACH_TYPE_SOURCES_END();
 
    if (!Z_ISUNDEF(coerced_value)) {
        zval_ptr_dtor(zv);
        ZVAL_COPY_VALUE(zv, &coerced_value);
    }
 
    return 1;
}
 
static zend_always_inline void i_zval_ptr_dtor_noref(zval *zval_ptr) {
    if (Z_REFCOUNTED_P(zval_ptr)) {
        zend_refcounted *ref = Z_COUNTED_P(zval_ptr);
        ZEND_ASSERT(Z_TYPE_P(zval_ptr) != IS_REFERENCE);
        GC_DTOR_NO_REF(ref);
    }
}
 
ZEND_API zval* zend_assign_to_typed_ref_ex(zval *variable_ptr, zval *orig_value, uint8_t value_type, bool strict, zend_refcounted **garbage_ptr)
{
    bool ret;
    zval value;
    zend_refcounted *ref = NULL;
 
    if (Z_ISREF_P(orig_value)) {
        ref = Z_COUNTED_P(orig_value);
        orig_value = Z_REFVAL_P(orig_value);
    }
 
    ZVAL_COPY(&value, orig_value);
    ret = zend_verify_ref_assignable_zval(Z_REF_P(variable_ptr), &value, strict);
    variable_ptr = Z_REFVAL_P(variable_ptr);
    if (EXPECTED(ret)) {
        if (Z_REFCOUNTED_P(variable_ptr)) {
            *garbage_ptr = Z_COUNTED_P(variable_ptr);
        }
        ZVAL_COPY_VALUE(variable_ptr, &value);
    } else {
        zval_ptr_dtor_nogc(&value);
    }
    if (value_type & (IS_VAR|IS_TMP_VAR)) {
        if (UNEXPECTED(ref)) {
            if (UNEXPECTED(GC_DELREF(ref) == 0)) {
                zval_ptr_dtor(orig_value);
                efree_size(ref, sizeof(zend_reference));
            }
        } else {
            i_zval_ptr_dtor_noref(orig_value);
        }
    }
    return variable_ptr;
}
 
ZEND_API zval* zend_assign_to_typed_ref(zval *variable_ptr, zval *orig_value, uint8_t value_type, bool strict)
{
    zend_refcounted *garbage = NULL;
    zval *result = zend_assign_to_typed_ref_ex(variable_ptr, orig_value, value_type, strict, &garbage);
    if (garbage) {
        GC_DTOR_NO_REF(garbage);
    }
    return result;
}
 
ZEND_API bool ZEND_FASTCALL zend_verify_prop_assignable_by_ref_ex(const zend_property_info *prop_info, zval *orig_val, bool strict, zend_verify_prop_assignable_by_ref_context context) {
    zval *val = orig_val;
    if (Z_ISREF_P(val) && ZEND_REF_HAS_TYPE_SOURCES(Z_REF_P(val))) {
        int result;
 
        val = Z_REFVAL_P(val);
        result = i_zend_verify_type_assignable_zval(prop_info, val, strict);
        if (result > 0) {
            return 1;
        }
 
        if (result < 0) {
            /* This is definitely an error, but we still need to determined why: Either because
             * the value is simply illegal for the type, or because or a conflicting coercion. */
            zval tmp;
            ZVAL_COPY(&tmp, val);
            if (zend_verify_weak_scalar_type_hint(ZEND_TYPE_FULL_MASK(prop_info->type), &tmp)) {
                const zend_property_info *ref_prop = ZEND_REF_FIRST_SOURCE(Z_REF_P(orig_val));
                zend_throw_ref_type_error_type(ref_prop, prop_info, val);
                zval_ptr_dtor(&tmp);
                return 0;
            }
            zval_ptr_dtor(&tmp);
        }
    } else {
        ZVAL_DEREF(val);
        if (i_zend_check_property_type(prop_info, val, strict)) {
            return 1;
        }
    }
 
    if (EXPECTED(context == ZEND_VERIFY_PROP_ASSIGNABLE_BY_REF_CONTEXT_ASSIGNMENT)) {
        zend_verify_property_type_error(prop_info, val);
    } else {
        ZEND_ASSERT(context == ZEND_VERIFY_PROP_ASSIGNABLE_BY_REF_CONTEXT_MAGIC_GET);
        zend_magic_get_property_type_inconsistency_error(prop_info, val);
    }
 
    return 0;
}
 
ZEND_API bool ZEND_FASTCALL zend_verify_prop_assignable_by_ref(const zend_property_info *prop_info, zval *orig_val, bool strict) {
    return zend_verify_prop_assignable_by_ref_ex(prop_info, orig_val, strict, ZEND_VERIFY_PROP_ASSIGNABLE_BY_REF_CONTEXT_ASSIGNMENT);
}
 
ZEND_API void ZEND_FASTCALL zend_ref_add_type_source(zend_property_info_source_list *source_list, zend_property_info *prop)
{
    zend_property_info_list *list;
    if (source_list->ptr == NULL) {
        source_list->ptr = prop;
        return;
    }
 
    list = ZEND_PROPERTY_INFO_SOURCE_TO_LIST(source_list->list);
    if (!ZEND_PROPERTY_INFO_SOURCE_IS_LIST(source_list->list)) {
        list = emalloc(sizeof(zend_property_info_list) + (4 - 1) * sizeof(zend_property_info *));
        list->ptr[0] = source_list->ptr;
        list->num_allocated = 4;
        list->num = 1;
    } else if (list->num_allocated == list->num) {
        list->num_allocated = list->num * 2;
        list = erealloc(list, sizeof(zend_property_info_list) + (list->num_allocated - 1) * sizeof(zend_property_info *));
    }
 
    list->ptr[list->num++] = prop;
    source_list->list = ZEND_PROPERTY_INFO_SOURCE_FROM_LIST(list);
}
 
ZEND_API void ZEND_FASTCALL zend_ref_del_type_source(zend_property_info_source_list *source_list, const zend_property_info *prop)
{
    zend_property_info_list *list = ZEND_PROPERTY_INFO_SOURCE_TO_LIST(source_list->list);
    zend_property_info **ptr, **end;
 
    ZEND_ASSERT(prop);
    if (!ZEND_PROPERTY_INFO_SOURCE_IS_LIST(source_list->list)) {
        ZEND_ASSERT(source_list->ptr == prop);
        source_list->ptr = NULL;
        return;
    }
 
    if (list->num == 1) {
        ZEND_ASSERT(*list->ptr == prop);
        efree(list);
        source_list->ptr = NULL;
        return;
    }
 
    /* Checking against end here to get a more graceful failure mode if we missed adding a type
     * source at some point. */
    ptr = list->ptr;
    end = ptr + list->num;
    while (ptr < end && *ptr != prop) {
        ptr++;
    }
    ZEND_ASSERT(*ptr == prop);
 
    /* Copy the last list element into the deleted slot. */
    *ptr = list->ptr[--list->num];
 
    if (list->num >= 4 && list->num * 4 == list->num_allocated) {
        list->num_allocated = list->num * 2;
        source_list->list = ZEND_PROPERTY_INFO_SOURCE_FROM_LIST(erealloc(list, sizeof(zend_property_info_list) + (list->num_allocated - 1) * sizeof(zend_property_info *)));
    }
}
 
static zend_never_inline void zend_fetch_this_var(int type OPLINE_DC EXECUTE_DATA_DC)
{
    zval *result = EX_VAR(opline->result.var);
 
    switch (type) {
        case BP_VAR_R:
            if (EXPECTED(Z_TYPE(EX(This)) == IS_OBJECT)) {
                ZVAL_OBJ(result, Z_OBJ(EX(This)));
                Z_ADDREF_P(result);
            } else {
                ZVAL_NULL(result);
                zend_error_unchecked(E_WARNING, "Undefined variable $this");
            }
            break;
        case BP_VAR_IS:
            if (EXPECTED(Z_TYPE(EX(This)) == IS_OBJECT)) {
                ZVAL_OBJ(result, Z_OBJ(EX(This)));
                Z_ADDREF_P(result);
            } else {
                ZVAL_NULL(result);
            }
            break;
        case BP_VAR_RW:
        case BP_VAR_W:
            ZVAL_UNDEF(result);
            zend_throw_error(NULL, "Cannot re-assign $this");
            break;
        case BP_VAR_UNSET:
            ZVAL_UNDEF(result);
            zend_throw_error(NULL, "Cannot unset $this");
            break;
        EMPTY_SWITCH_DEFAULT_CASE()
    }
}
 
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_clone_call(zend_function *clone, zend_class_entry *scope)
{
    zend_throw_error(NULL, "Call to %s %s::__clone() from %s%s",
        zend_visibility_string(clone->common.fn_flags), ZSTR_VAL(clone->common.scope->name),
        scope ? "scope " : "global scope",
        scope ? ZSTR_VAL(scope->name) : ""
    );
}
 
#if ZEND_INTENSIVE_DEBUGGING
 
#define CHECK_SYMBOL_TABLES()                                                   \
    zend_hash_apply(&EG(symbol_table), zend_check_symbol);          \
    if (&EG(symbol_table)!=EX(symbol_table)) {                          \
        zend_hash_apply(EX(symbol_table), zend_check_symbol);   \
    }
 
static void zend_check_symbol(zval *pz)
{
    if (Z_TYPE_P(pz) == IS_INDIRECT) {
        pz = Z_INDIRECT_P(pz);
    }
    if (Z_TYPE_P(pz) > 10) {
        fprintf(stderr, "Warning!  %x has invalid type!\n", *pz);
/* See http://support.microsoft.com/kb/190351 */
#ifdef ZEND_WIN32
        fflush(stderr);
#endif
    } else if (Z_TYPE_P(pz) == IS_ARRAY) {
        zend_hash_apply(Z_ARRVAL_P(pz), zend_check_symbol);
    } else if (Z_TYPE_P(pz) == IS_OBJECT) {
        /* OBJ-TBI - doesn't support new object model! */
        zend_hash_apply(Z_OBJPROP_P(pz), zend_check_symbol);
    }
}
 
 
#else
#define CHECK_SYMBOL_TABLES()
#endif
 
ZEND_API void execute_internal(zend_execute_data *execute_data, zval *return_value)
{
    execute_data->func->internal_function.handler(execute_data, return_value);
}
 
ZEND_API void zend_clean_and_cache_symbol_table(zend_array *symbol_table) /* {{{ */
{
    /* Clean before putting into the cache, since clean could call dtors,
     * which could use the cached hash. Also do this before the check for
     * available cache slots, as those may be used by a dtor as well. */
    zend_symtable_clean(symbol_table);
    if (EG(symtable_cache_ptr) >= EG(symtable_cache_limit)) {
        zend_array_destroy(symbol_table);
    } else {
        *(EG(symtable_cache_ptr)++) = symbol_table;
    }
}
/* }}} */
 
static zend_always_inline void i_free_compiled_variables(zend_execute_data *execute_data) /* {{{ */
{
    zval *cv = EX_VAR_NUM(0);
    int count = EX(func)->op_array.last_var;
    while (EXPECTED(count != 0)) {
        i_zval_ptr_dtor(cv);
        cv++;
        count--;
    }
}
/* }}} */
 
ZEND_API void ZEND_FASTCALL zend_free_compiled_variables(zend_execute_data *execute_data) /* {{{ */
{
    i_free_compiled_variables(execute_data);
}
/* }}} */
 
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_fcall_interrupt(zend_execute_data *call)
{
    zend_atomic_bool_store_ex(&EG(vm_interrupt), false);
    if (zend_atomic_bool_load_ex(&EG(timed_out))) {
        zend_timeout();
    } else if (zend_interrupt_function) {
        zend_interrupt_function(call);
    }
}
 
#define ZEND_VM_INTERRUPT_CHECK() do { \
        if (UNEXPECTED(zend_atomic_bool_load_ex(&EG(vm_interrupt)))) { \
            ZEND_VM_INTERRUPT(); \
        } \
    } while (0)
 
#define ZEND_VM_LOOP_INTERRUPT_CHECK() do { \
        if (UNEXPECTED(zend_atomic_bool_load_ex(&EG(vm_interrupt)))) { \
            ZEND_VM_LOOP_INTERRUPT(); \
        } \
    } while (0)
 
#define ZEND_VM_FCALL_INTERRUPT_CHECK(call) do { \
        if (UNEXPECTED(zend_atomic_bool_load_ex(&EG(vm_interrupt)))) { \
            zend_fcall_interrupt(call); \
        } \
    } while (0)
 
/*
 * Stack Frame Layout (the whole stack frame is allocated at once)
 * ==================
 *
 *                             +========================================+
 * EG(current_execute_data) -> | zend_execute_data                      |
 *                             +----------------------------------------+
 *     EX_VAR_NUM(0) --------> | VAR[0] = ARG[1]                        |
 *                             | ...                                    |
 *                             | VAR[op_array->num_args-1] = ARG[N]     |
 *                             | ...                                    |
 *                             | VAR[op_array->last_var-1]              |
 *                             | VAR[op_array->last_var] = TMP[0]       |
 *                             | ...                                    |
 *                             | VAR[op_array->last_var+op_array->T-1]  |
 *                             | ARG[N+1] (extra_args)                  |
 *                             | ...                                    |
 *                             +----------------------------------------+
 */
 
/* zend_copy_extra_args is used when the actually passed number of arguments
 * (EX_NUM_ARGS) is greater than what the function defined (op_array->num_args).
 *
 * The extra arguments will be copied into the call frame after all the compiled variables.
 *
 * If there are extra arguments copied, a flag "ZEND_CALL_FREE_EXTRA_ARGS" will be set
 * on the zend_execute_data, and when the executor leaves the function, the
 * args will be freed in zend_leave_helper.
 */
static zend_never_inline void zend_copy_extra_args(EXECUTE_DATA_D)
{
    zend_op_array *op_array = &EX(func)->op_array;
    uint32_t first_extra_arg = op_array->num_args;
    uint32_t num_args = EX_NUM_ARGS();
    zval *src;
    size_t delta;
    uint32_t count;
    uint32_t type_flags = 0;
 
    if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
        /* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
        opline += first_extra_arg;
#else
        EX(opline) += first_extra_arg;
#endif
 
    }
 
    /* move extra args into separate array after all CV and TMP vars */
    src = EX_VAR_NUM(num_args - 1);
    delta = op_array->last_var + op_array->T - first_extra_arg;
    count = num_args - first_extra_arg;
    if (EXPECTED(delta != 0)) {
        delta *= sizeof(zval);
        do {
            type_flags |= Z_TYPE_INFO_P(src);
            ZVAL_COPY_VALUE((zval*)(((char*)src) + delta), src);
            ZVAL_UNDEF(src);
            src--;
        } while (--count);
        if (Z_TYPE_INFO_REFCOUNTED(type_flags)) {
            ZEND_ADD_CALL_FLAG(execute_data, ZEND_CALL_FREE_EXTRA_ARGS);
        }
    } else {
        do {
            if (Z_REFCOUNTED_P(src)) {
                ZEND_ADD_CALL_FLAG(execute_data, ZEND_CALL_FREE_EXTRA_ARGS);
                break;
            }
            src--;
        } while (--count);
    }
}
 
static zend_always_inline void zend_init_cvs(uint32_t first, uint32_t last EXECUTE_DATA_DC)
{
    if (EXPECTED(first < last)) {
        uint32_t count = last - first;
        zval *var = EX_VAR_NUM(first);
 
        do {
            ZVAL_UNDEF(var);
            var++;
        } while (--count);
    }
}
 
static zend_always_inline void i_init_func_execute_data(zend_op_array *op_array, zval *return_value, bool may_be_trampoline EXECUTE_DATA_DC) /* {{{ */
{
    uint32_t first_extra_arg, num_args;
    ZEND_ASSERT(EX(func) == (zend_function*)op_array);
 
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
    opline = op_array->opcodes;
#else
    EX(opline) = op_array->opcodes;
#endif
    EX(call) = NULL;
    EX(return_value) = return_value;
 
    /* Handle arguments */
    first_extra_arg = op_array->num_args;
    num_args = EX_NUM_ARGS();
    if (UNEXPECTED(num_args > first_extra_arg)) {
        if (!may_be_trampoline || EXPECTED(!(op_array->fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE))) {
            zend_copy_extra_args(EXECUTE_DATA_C);
        }
    } else if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
        /* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
        opline += num_args;
#else
        EX(opline) += num_args;
#endif
    }
 
    /* Initialize CV variables (skip arguments) */
    zend_init_cvs(num_args, op_array->last_var EXECUTE_DATA_CC);
 
    EX(run_time_cache) = RUN_TIME_CACHE(op_array);
 
    EG(current_execute_data) = execute_data;
}
/* }}} */
 
static zend_always_inline void init_func_run_time_cache_i(zend_op_array *op_array) /* {{{ */
{
    void **run_time_cache;
 
    ZEND_ASSERT(RUN_TIME_CACHE(op_array) == NULL);
    run_time_cache = zend_arena_alloc(&CG(arena), op_array->cache_size);
    memset(run_time_cache, 0, op_array->cache_size);
    ZEND_MAP_PTR_SET(op_array->run_time_cache, run_time_cache);
}
/* }}} */
 
static zend_never_inline void ZEND_FASTCALL init_func_run_time_cache(zend_op_array *op_array) /* {{{ */
{
    init_func_run_time_cache_i(op_array);
}
/* }}} */
 
ZEND_API zend_function * ZEND_FASTCALL zend_fetch_function(zend_string *name) /* {{{ */
{
    zval *zv = zend_hash_find(EG(function_table), name);
 
    if (EXPECTED(zv != NULL)) {
        zend_function *fbc = Z_FUNC_P(zv);
 
        if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
            init_func_run_time_cache_i(&fbc->op_array);
        }
        return fbc;
    }
    return NULL;
} /* }}} */
 
ZEND_API zend_function * ZEND_FASTCALL zend_fetch_function_str(const char *name, size_t len) /* {{{ */
{
    zval *zv = zend_hash_str_find(EG(function_table), name, len);
 
    if (EXPECTED(zv != NULL)) {
        zend_function *fbc = Z_FUNC_P(zv);
 
        if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
            init_func_run_time_cache_i(&fbc->op_array);
        }
        return fbc;
    }
    return NULL;
} /* }}} */
 
ZEND_API void ZEND_FASTCALL zend_init_func_run_time_cache(zend_op_array *op_array) /* {{{ */
{
    if (!RUN_TIME_CACHE(op_array)) {
        init_func_run_time_cache_i(op_array);
    }
} /* }}} */
 
static zend_always_inline void i_init_code_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */
{
    ZEND_ASSERT(EX(func) == (zend_function*)op_array);
 
    EX(opline) = op_array->opcodes;
    EX(call) = NULL;
    EX(return_value) = return_value;
 
    if (op_array->last_var) {
        zend_attach_symbol_table(execute_data);
    }
 
    if (!ZEND_MAP_PTR(op_array->run_time_cache)) {
        void *ptr;
 
        ZEND_ASSERT(op_array->fn_flags & ZEND_ACC_HEAP_RT_CACHE);
        ptr = emalloc(op_array->cache_size);
        ZEND_MAP_PTR_INIT(op_array->run_time_cache, ptr);
        memset(ptr, 0, op_array->cache_size);
    }
    EX(run_time_cache) = RUN_TIME_CACHE(op_array);
 
    EG(current_execute_data) = execute_data;
}
/* }}} */
 
ZEND_API void zend_init_func_execute_data(zend_execute_data *ex, zend_op_array *op_array, zval *return_value) /* {{{ */
{
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
    zend_execute_data *orig_execute_data = execute_data;
#endif
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
    const zend_op *orig_opline = opline;
#endif
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
    execute_data = ex;
#else
    zend_execute_data *execute_data = ex;
#endif
 
    EX(prev_execute_data) = EG(current_execute_data);
    if (!RUN_TIME_CACHE(op_array)) {
        init_func_run_time_cache(op_array);
    }
    i_init_func_execute_data(op_array, return_value, 1 EXECUTE_DATA_CC);
 
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
    EX(opline) = opline;
    opline = orig_opline;
#endif
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
    execute_data = orig_execute_data;
#endif
}
/* }}} */
 
ZEND_API void zend_init_code_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */
{
    EX(prev_execute_data) = EG(current_execute_data);
    i_init_code_execute_data(execute_data, op_array, return_value);
}
/* }}} */
 
ZEND_API void zend_init_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */
{
    if (EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE) {
        zend_init_code_execute_data(execute_data, op_array, return_value);
    } else {
        zend_init_func_execute_data(execute_data, op_array, return_value);
    }
}
/* }}} */
 
zend_execute_data *zend_vm_stack_copy_call_frame(zend_execute_data *call, uint32_t passed_args, uint32_t additional_args) /* {{{ */
{
    zend_execute_data *new_call;
    int used_stack = (EG(vm_stack_top) - (zval*)call) + additional_args;
 
    /* copy call frame into new stack segment */
    new_call = zend_vm_stack_extend(used_stack * sizeof(zval));
    *new_call = *call;
    ZEND_ADD_CALL_FLAG(new_call, ZEND_CALL_ALLOCATED);
 
    if (passed_args) {
        zval *src = ZEND_CALL_ARG(call, 1);
        zval *dst = ZEND_CALL_ARG(new_call, 1);
        do {
            ZVAL_COPY_VALUE(dst, src);
            passed_args--;
            src++;
            dst++;
        } while (passed_args);
    }
 
    /* delete old call_frame from previous stack segment */
    EG(vm_stack)->prev->top = (zval*)call;
 
    /* delete previous stack segment if it became empty */
    if (UNEXPECTED(EG(vm_stack)->prev->top == ZEND_VM_STACK_ELEMENTS(EG(vm_stack)->prev))) {
        zend_vm_stack r = EG(vm_stack)->prev;
 
        EG(vm_stack)->prev = r->prev;
        efree(r);
    }
 
    return new_call;
}
/* }}} */
 
static zend_always_inline zend_generator *zend_get_running_generator(EXECUTE_DATA_D) /* {{{ */
{
    /* The generator object is stored in EX(return_value) */
    zend_generator *generator = (zend_generator *) EX(return_value);
    /* However control may currently be delegated to another generator.
     * That's the one we're interested in. */
    return generator;
}
/* }}} */
 
ZEND_API void zend_unfinished_calls_gc(zend_execute_data *execute_data, zend_execute_data *call, uint32_t op_num, zend_get_gc_buffer *buf) /* {{{ */
{
    zend_op *opline = EX(func)->op_array.opcodes + op_num;
    int level;
    int do_exit;
    uint32_t num_args;
 
    if (UNEXPECTED(opline->opcode == ZEND_INIT_FCALL ||
        opline->opcode == ZEND_INIT_FCALL_BY_NAME ||
        opline->opcode == ZEND_INIT_NS_FCALL_BY_NAME ||
        opline->opcode == ZEND_INIT_DYNAMIC_CALL ||
        opline->opcode == ZEND_INIT_USER_CALL ||
        opline->opcode == ZEND_INIT_METHOD_CALL ||
        opline->opcode == ZEND_INIT_STATIC_METHOD_CALL ||
        opline->opcode == ZEND_NEW)) {
        ZEND_ASSERT(op_num);
        opline--;
    }
 
    do {
        /* find the number of actually passed arguments */
        level = 0;
        do_exit = 0;
        num_args = ZEND_CALL_NUM_ARGS(call);
        do {
            switch (opline->opcode) {
                case ZEND_DO_FCALL:
                case ZEND_DO_ICALL:
                case ZEND_DO_UCALL:
                case ZEND_DO_FCALL_BY_NAME:
                case ZEND_CALLABLE_CONVERT:
                    level++;
                    break;
                case ZEND_INIT_FCALL:
                case ZEND_INIT_FCALL_BY_NAME:
                case ZEND_INIT_NS_FCALL_BY_NAME:
                case ZEND_INIT_DYNAMIC_CALL:
                case ZEND_INIT_USER_CALL:
                case ZEND_INIT_METHOD_CALL:
                case ZEND_INIT_STATIC_METHOD_CALL:
                case ZEND_NEW:
                    if (level == 0) {
                        num_args = 0;
                        do_exit = 1;
                    }
                    level--;
                    break;
                case ZEND_SEND_VAL:
                case ZEND_SEND_VAL_EX:
                case ZEND_SEND_VAR:
                case ZEND_SEND_VAR_EX:
                case ZEND_SEND_FUNC_ARG:
                case ZEND_SEND_REF:
                case ZEND_SEND_VAR_NO_REF:
                case ZEND_SEND_VAR_NO_REF_EX:
                case ZEND_SEND_USER:
                    if (level == 0) {
                        /* For named args, the number of arguments is up to date. */
                        if (opline->op2_type != IS_CONST) {
                            num_args = opline->op2.num;
                        }
                        do_exit = 1;
                    }
                    break;
                case ZEND_SEND_ARRAY:
                case ZEND_SEND_UNPACK:
                case ZEND_CHECK_UNDEF_ARGS:
                    if (level == 0) {
                        do_exit = 1;
                    }
                    break;
            }
            if (!do_exit) {
                opline--;
            }
        } while (!do_exit);
        if (call->prev_execute_data) {
            /* skip current call region */
            level = 0;
            do_exit = 0;
            do {
                switch (opline->opcode) {
                    case ZEND_DO_FCALL:
                    case ZEND_DO_ICALL:
                    case ZEND_DO_UCALL:
                    case ZEND_DO_FCALL_BY_NAME:
                    case ZEND_CALLABLE_CONVERT:
                        level++;
                        break;
                    case ZEND_INIT_FCALL:
                    case ZEND_INIT_FCALL_BY_NAME:
                    case ZEND_INIT_NS_FCALL_BY_NAME:
                    case ZEND_INIT_DYNAMIC_CALL:
                    case ZEND_INIT_USER_CALL:
                    case ZEND_INIT_METHOD_CALL:
                    case ZEND_INIT_STATIC_METHOD_CALL:
                    case ZEND_NEW:
                        if (level == 0) {
                            do_exit = 1;
                        }
                        level--;
                        break;
                }
                opline--;
            } while (!do_exit);
        }
 
        if (EXPECTED(num_args > 0)) {
            zval *p = ZEND_CALL_ARG(call, 1);
            do {
                zend_get_gc_buffer_add_zval(buf, p);
                p++;
            } while (--num_args);
        }
        if (ZEND_CALL_INFO(call) & ZEND_CALL_RELEASE_THIS) {
            zend_get_gc_buffer_add_obj(buf, Z_OBJ(call->This));
        }
        if (ZEND_CALL_INFO(call) & ZEND_CALL_HAS_EXTRA_NAMED_PARAMS) {
            zval *val;
            ZEND_HASH_FOREACH_VAL(call->extra_named_params, val) {
                zend_get_gc_buffer_add_zval(buf, val);
            } ZEND_HASH_FOREACH_END();
        }
        if (call->func->common.fn_flags & ZEND_ACC_CLOSURE) {
            zend_get_gc_buffer_add_obj(buf, ZEND_CLOSURE_OBJECT(call->func));
        }
 
        call = call->prev_execute_data;
    } while (call);
}
/* }}} */
 
static void cleanup_unfinished_calls(zend_execute_data *execute_data, uint32_t op_num) /* {{{ */
{
    if (UNEXPECTED(EX(call))) {
        zend_execute_data *call = EX(call);
        zend_op *opline = EX(func)->op_array.opcodes + op_num;
        int level;
        int do_exit;
 
        if (UNEXPECTED(opline->opcode == ZEND_INIT_FCALL ||
            opline->opcode == ZEND_INIT_FCALL_BY_NAME ||
            opline->opcode == ZEND_INIT_NS_FCALL_BY_NAME ||
            opline->opcode == ZEND_INIT_DYNAMIC_CALL ||
            opline->opcode == ZEND_INIT_USER_CALL ||
            opline->opcode == ZEND_INIT_METHOD_CALL ||
            opline->opcode == ZEND_INIT_STATIC_METHOD_CALL ||
            opline->opcode == ZEND_INIT_PARENT_PROPERTY_HOOK_CALL ||
            opline->opcode == ZEND_NEW)) {
            ZEND_ASSERT(op_num);
            opline--;
        }
 
        do {
            /* If the exception was thrown during a function call there might be
             * arguments pushed to the stack that have to be dtor'ed. */
 
            /* find the number of actually passed arguments */
            level = 0;
            do_exit = 0;
            do {
                switch (opline->opcode) {
                    case ZEND_DO_FCALL:
                    case ZEND_DO_ICALL:
                    case ZEND_DO_UCALL:
                    case ZEND_DO_FCALL_BY_NAME:
                    case ZEND_CALLABLE_CONVERT:
                        level++;
                        break;
                    case ZEND_INIT_FCALL:
                    case ZEND_INIT_FCALL_BY_NAME:
                    case ZEND_INIT_NS_FCALL_BY_NAME:
                    case ZEND_INIT_DYNAMIC_CALL:
                    case ZEND_INIT_USER_CALL:
                    case ZEND_INIT_METHOD_CALL:
                    case ZEND_INIT_STATIC_METHOD_CALL:
                    case ZEND_INIT_PARENT_PROPERTY_HOOK_CALL:
                    case ZEND_NEW:
                        if (level == 0) {
                            ZEND_CALL_NUM_ARGS(call) = 0;
                            do_exit = 1;
                        }
                        level--;
                        break;
                    case ZEND_SEND_VAL:
                    case ZEND_SEND_VAL_EX:
                    case ZEND_SEND_VAR:
                    case ZEND_SEND_VAR_EX:
                    case ZEND_SEND_FUNC_ARG:
                    case ZEND_SEND_REF:
                    case ZEND_SEND_VAR_NO_REF:
                    case ZEND_SEND_VAR_NO_REF_EX:
                    case ZEND_SEND_USER:
                        if (level == 0) {
                            /* For named args, the number of arguments is up to date. */
                            if (opline->op2_type != IS_CONST) {
                                ZEND_CALL_NUM_ARGS(call) = opline->op2.num;
                            }
                            do_exit = 1;
                        }
                        break;
                    case ZEND_SEND_ARRAY:
                    case ZEND_SEND_UNPACK:
                    case ZEND_CHECK_UNDEF_ARGS:
                        if (level == 0) {
                            do_exit = 1;
                        }
                        break;
                }
                if (!do_exit) {
                    opline--;
                }
            } while (!do_exit);
            if (call->prev_execute_data) {
                /* skip current call region */
                level = 0;
                do_exit = 0;
                do {
                    switch (opline->opcode) {
                        case ZEND_DO_FCALL:
                        case ZEND_DO_ICALL:
                        case ZEND_DO_UCALL:
                        case ZEND_DO_FCALL_BY_NAME:
                        case ZEND_CALLABLE_CONVERT:
                            level++;
                            break;
                        case ZEND_INIT_FCALL:
                        case ZEND_INIT_FCALL_BY_NAME:
                        case ZEND_INIT_NS_FCALL_BY_NAME:
                        case ZEND_INIT_DYNAMIC_CALL:
                        case ZEND_INIT_USER_CALL:
                        case ZEND_INIT_METHOD_CALL:
                        case ZEND_INIT_STATIC_METHOD_CALL:
                        case ZEND_INIT_PARENT_PROPERTY_HOOK_CALL:
                        case ZEND_NEW:
                            if (level == 0) {
                                do_exit = 1;
                            }
                            level--;
                            break;
                    }
                    opline--;
                } while (!do_exit);
            }
 
            zend_vm_stack_free_args(EX(call));
 
            if (ZEND_CALL_INFO(call) & ZEND_CALL_RELEASE_THIS) {
                OBJ_RELEASE(Z_OBJ(call->This));
            }
            if (ZEND_CALL_INFO(call) & ZEND_CALL_HAS_EXTRA_NAMED_PARAMS) {
                zend_free_extra_named_params(call->extra_named_params);
            }
            if (call->func->common.fn_flags & ZEND_ACC_CLOSURE) {
                zend_object_release(ZEND_CLOSURE_OBJECT(call->func));
            } else if (call->func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
                zend_string_release_ex(call->func->common.function_name, 0);
                zend_free_trampoline(call->func);
            }
 
            EX(call) = call->prev_execute_data;
            zend_vm_stack_free_call_frame(call);
            call = EX(call);
        } while (call);
    }
}
/* }}} */
 
static const zend_live_range *find_live_range(const zend_op_array *op_array, uint32_t op_num, uint32_t var_num) /* {{{ */
{
    int i;
    for (i = 0; i < op_array->last_live_range; i++) {
        const zend_live_range *range = &op_array->live_range[i];
        if (op_num >= range->start && op_num < range->end
                && var_num == (range->var & ~ZEND_LIVE_MASK)) {
            return range;
        }
    }
    return NULL;
}
/* }}} */
 
static void cleanup_live_vars(zend_execute_data *execute_data, uint32_t op_num, uint32_t catch_op_num) /* {{{ */
{
    int i;
 
    for (i = 0; i < EX(func)->op_array.last_live_range; i++) {
        const zend_live_range *range = &EX(func)->op_array.live_range[i];
        if (range->start > op_num) {
            /* further blocks will not be relevant... */
            break;
        } else if (op_num < range->end) {
            if (!catch_op_num || catch_op_num >= range->end) {
                uint32_t kind = range->var & ZEND_LIVE_MASK;
                uint32_t var_num = range->var & ~ZEND_LIVE_MASK;
                zval *var = EX_VAR(var_num);
 
                if (kind == ZEND_LIVE_TMPVAR) {
                    zval_ptr_dtor_nogc(var);
                } else if (kind == ZEND_LIVE_NEW) {
                    zend_object *obj;
                    ZEND_ASSERT(Z_TYPE_P(var) == IS_OBJECT);
                    obj = Z_OBJ_P(var);
                    zend_object_store_ctor_failed(obj);
                    OBJ_RELEASE(obj);
                } else if (kind == ZEND_LIVE_LOOP) {
                    if (Z_TYPE_P(var) != IS_ARRAY && Z_FE_ITER_P(var) != (uint32_t)-1) {
                        zend_hash_iterator_del(Z_FE_ITER_P(var));
                    }
                    zval_ptr_dtor_nogc(var);
                } else if (kind == ZEND_LIVE_ROPE) {
                    zend_string **rope = (zend_string **)var;
                    zend_op *last = EX(func)->op_array.opcodes + op_num;
                    while ((last->opcode != ZEND_ROPE_ADD && last->opcode != ZEND_ROPE_INIT)
                            || last->result.var != var_num) {
                        ZEND_ASSERT(last >= EX(func)->op_array.opcodes);
                        last--;
                    }
                    if (last->opcode == ZEND_ROPE_INIT) {
                        zend_string_release_ex(*rope, 0);
                    } else {
                        int j = last->extended_value;
                        do {
                            zend_string_release_ex(rope[j], 0);
                        } while (j--);
                    }
                } else if (kind == ZEND_LIVE_SILENCE) {
                    /* restore previous error_reporting value */
                    if (E_HAS_ONLY_FATAL_ERRORS(EG(error_reporting))
                            && !E_HAS_ONLY_FATAL_ERRORS(Z_LVAL_P(var))) {
                        EG(error_reporting) = Z_LVAL_P(var);
                    }
                }
            }
        }
    }
}
/* }}} */
 
ZEND_API void zend_cleanup_unfinished_execution(zend_execute_data *execute_data, uint32_t op_num, uint32_t catch_op_num) {
    cleanup_unfinished_calls(execute_data, op_num);
    cleanup_live_vars(execute_data, op_num, catch_op_num);
}
 
ZEND_API ZEND_ATTRIBUTE_DEPRECATED HashTable *zend_unfinished_execution_gc(zend_execute_data *execute_data, zend_execute_data *call, zend_get_gc_buffer *gc_buffer)
{
    return zend_unfinished_execution_gc_ex(execute_data, call, gc_buffer, false);
}
 
ZEND_API HashTable *zend_unfinished_execution_gc_ex(zend_execute_data *execute_data, zend_execute_data *call, zend_get_gc_buffer *gc_buffer, bool suspended_by_yield)
{
    if (!EX(func)) {
        return NULL;
    }
 
    if (EX_CALL_INFO() & ZEND_CALL_RELEASE_THIS) {
        zend_get_gc_buffer_add_obj(gc_buffer, Z_OBJ(execute_data->This));
    }
 
    if (EX_CALL_INFO() & ZEND_CALL_CLOSURE) {
        zend_get_gc_buffer_add_obj(gc_buffer, ZEND_CLOSURE_OBJECT(EX(func)));
    }
 
    if (!ZEND_USER_CODE(EX(func)->common.type)) {
        ZEND_ASSERT(!(EX_CALL_INFO() & (ZEND_CALL_HAS_SYMBOL_TABLE|ZEND_CALL_FREE_EXTRA_ARGS|ZEND_CALL_HAS_EXTRA_NAMED_PARAMS)));
        return NULL;
    }
 
    zend_op_array *op_array = &EX(func)->op_array;
 
    if (!(EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE)) {
        uint32_t i, num_cvs = EX(func)->op_array.last_var;
        for (i = 0; i < num_cvs; i++) {
            zend_get_gc_buffer_add_zval(gc_buffer, EX_VAR_NUM(i));
        }
    }
 
    if (EX_CALL_INFO() & ZEND_CALL_FREE_EXTRA_ARGS) {
        zval *zv = EX_VAR_NUM(op_array->last_var + op_array->T);
        zval *end = zv + (EX_NUM_ARGS() - op_array->num_args);
        while (zv != end) {
            zend_get_gc_buffer_add_zval(gc_buffer, zv++);
        }
    }
 
    if (EX_CALL_INFO() & ZEND_CALL_HAS_EXTRA_NAMED_PARAMS) {
        zval extra_named_params;
        ZVAL_ARR(&extra_named_params, EX(extra_named_params));
        zend_get_gc_buffer_add_zval(gc_buffer, &extra_named_params);
    }
 
    uint32_t op_num;
    if (UNEXPECTED(execute_data->opline->opcode == ZEND_HANDLE_EXCEPTION)) {
        op_num = EG(opline_before_exception) - op_array->opcodes;
    } else {
        op_num = execute_data->opline - op_array->opcodes;
    }
    ZEND_ASSERT(op_num < op_array->last);
 
    if (call) {
        zend_unfinished_calls_gc(execute_data, call, op_num, gc_buffer);
    }
 
    if (execute_data->opline != op_array->opcodes) {
        uint32_t i;
        for (i = 0; i < op_array->last_live_range; i++) {
            const zend_live_range *range = &op_array->live_range[i];
            if (range->start > op_num) {
                break;
            } else if (op_num < range->end) {
                uint32_t kind = range->var & ZEND_LIVE_MASK;
                uint32_t var_num = range->var & ~ZEND_LIVE_MASK;
                zval *var = EX_VAR(var_num);
                if (kind == ZEND_LIVE_TMPVAR || kind == ZEND_LIVE_LOOP) {
                    zend_get_gc_buffer_add_zval(gc_buffer, var);
                }
            }
        }
    }
 
    if (EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE) {
        return execute_data->symbol_table;
    } else {
        return NULL;
    }
}
 
#if ZEND_VM_SPEC
static void zend_swap_operands(zend_op *op) /* {{{ */
{
    znode_op     tmp;
    uint8_t   tmp_type;
 
    tmp          = op->op1;
    tmp_type     = op->op1_type;
    op->op1      = op->op2;
    op->op1_type = op->op2_type;
    op->op2      = tmp;
    op->op2_type = tmp_type;
 
#ifdef ZEND_VERIFY_TYPE_INFERENCE
    uint32_t tmp_info;
    tmp_info = op->op1_use_type;
    op->op1_use_type = op->op2_use_type;
    op->op2_use_type = tmp_info;
    tmp_info = op->op1_def_type;
    op->op1_def_type = op->op2_def_type;
    op->op2_def_type = tmp_info;
#endif
}
/* }}} */
#endif
 
static zend_never_inline zend_execute_data *zend_init_dynamic_call_string(zend_string *function, uint32_t num_args) /* {{{ */
{
    zend_function *fbc;
    zval *func;
    zend_class_entry *called_scope;
    zend_string *lcname;
    const char *colon;
 
    if ((colon = zend_memrchr(ZSTR_VAL(function), ':', ZSTR_LEN(function))) != NULL &&
        colon > ZSTR_VAL(function) &&
        *(colon-1) == ':'
    ) {
        zend_string *mname;
        size_t cname_length = colon - ZSTR_VAL(function) - 1;
        size_t mname_length = ZSTR_LEN(function) - cname_length - (sizeof("::") - 1);
 
        lcname = zend_string_init(ZSTR_VAL(function), cname_length, 0);
 
        called_scope = zend_fetch_class_by_name(lcname, NULL, ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION);
        if (UNEXPECTED(called_scope == NULL)) {
            zend_string_release_ex(lcname, 0);
            return NULL;
        }
 
        mname = zend_string_init(ZSTR_VAL(function) + (cname_length + sizeof("::") - 1), mname_length, 0);
 
        if (called_scope->get_static_method) {
            fbc = called_scope->get_static_method(called_scope, mname);
        } else {
            fbc = zend_std_get_static_method(called_scope, mname, NULL);
        }
        if (UNEXPECTED(fbc == NULL)) {
            if (EXPECTED(!EG(exception))) {
                zend_undefined_method(called_scope, mname);
            }
            zend_string_release_ex(lcname, 0);
            zend_string_release_ex(mname, 0);
            return NULL;
        }
 
        zend_string_release_ex(lcname, 0);
        zend_string_release_ex(mname, 0);
 
        if (UNEXPECTED(!(fbc->common.fn_flags & ZEND_ACC_STATIC))) {
            zend_non_static_method_call(fbc);
            if (fbc->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
                zend_string_release_ex(fbc->common.function_name, 0);
                zend_free_trampoline(fbc);
            }
            return NULL;
        }
        if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
            init_func_run_time_cache(&fbc->op_array);
        }
    } else {
        if (ZSTR_VAL(function)[0] == '\\') {
            lcname = zend_string_alloc(ZSTR_LEN(function) - 1, 0);
            zend_str_tolower_copy(ZSTR_VAL(lcname), ZSTR_VAL(function) + 1, ZSTR_LEN(function) - 1);
        } else {
            lcname = zend_string_tolower(function);
        }
        if (UNEXPECTED((func = zend_hash_find(EG(function_table), lcname)) == NULL)) {
            zend_throw_error(NULL, "Call to undefined function %s()", ZSTR_VAL(function));
            zend_string_release_ex(lcname, 0);
            return NULL;
        }
        zend_string_release_ex(lcname, 0);
 
        fbc = Z_FUNC_P(func);
        if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
            init_func_run_time_cache(&fbc->op_array);
        }
        called_scope = NULL;
    }
 
    return zend_vm_stack_push_call_frame(ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC,
        fbc, num_args, called_scope);
}
/* }}} */
 
static zend_never_inline zend_execute_data *zend_init_dynamic_call_object(zend_object *function, uint32_t num_args) /* {{{ */
{
    zend_function *fbc;
    void *object_or_called_scope;
    zend_class_entry *called_scope;
    zend_object *object;
    uint32_t call_info;
 
    if (EXPECTED(function->handlers->get_closure) &&
        EXPECTED(function->handlers->get_closure(function, &called_scope, &fbc, &object, 0) == SUCCESS)) {
 
        object_or_called_scope = called_scope;
        if (EXPECTED(fbc->common.fn_flags & ZEND_ACC_CLOSURE)) {
            /* Delay closure destruction until its invocation */
            GC_ADDREF(ZEND_CLOSURE_OBJECT(fbc));
            ZEND_ASSERT(ZEND_ACC_FAKE_CLOSURE == ZEND_CALL_FAKE_CLOSURE);
            call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC | ZEND_CALL_CLOSURE |
                (fbc->common.fn_flags & ZEND_ACC_FAKE_CLOSURE);
            if (object) {
                call_info |= ZEND_CALL_HAS_THIS;
                object_or_called_scope = object;
            }
        } else {
            call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC;
            if (object) {
                call_info |= ZEND_CALL_RELEASE_THIS | ZEND_CALL_HAS_THIS;
                GC_ADDREF(object); /* For $this pointer */
                object_or_called_scope = object;
            }
        }
    } else {
        zend_throw_error(NULL, "Object of type %s is not callable", ZSTR_VAL(function->ce->name));
        return NULL;
    }
 
    if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
        init_func_run_time_cache(&fbc->op_array);
    }
 
    return zend_vm_stack_push_call_frame(call_info,
        fbc, num_args, object_or_called_scope);
}
/* }}} */
 
static zend_never_inline zend_execute_data *zend_init_dynamic_call_array(zend_array *function, uint32_t num_args) /* {{{ */
{
    zend_function *fbc;
    void *object_or_called_scope;
    uint32_t call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC;
 
    if (zend_hash_num_elements(function) == 2) {
        zval *obj;
        zval *method;
        obj = zend_hash_index_find(function, 0);
        method = zend_hash_index_find(function, 1);
 
        if (UNEXPECTED(!obj) || UNEXPECTED(!method)) {
            zend_throw_error(NULL, "Array callback has to contain indices 0 and 1");
            return NULL;
        }
 
        ZVAL_DEREF(obj);
        if (UNEXPECTED(Z_TYPE_P(obj) != IS_STRING) && UNEXPECTED(Z_TYPE_P(obj) != IS_OBJECT)) {
            zend_throw_error(NULL, "First array member is not a valid class name or object");
            return NULL;
        }
 
        ZVAL_DEREF(method);
        if (UNEXPECTED(Z_TYPE_P(method) != IS_STRING)) {
            zend_throw_error(NULL, "Second array member is not a valid method");
            return NULL;
        }
 
        if (Z_TYPE_P(obj) == IS_STRING) {
            zend_class_entry *called_scope = zend_fetch_class_by_name(Z_STR_P(obj), NULL, ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION);
 
            if (UNEXPECTED(called_scope == NULL)) {
                return NULL;
            }
 
            if (called_scope->get_static_method) {
                fbc = called_scope->get_static_method(called_scope, Z_STR_P(method));
            } else {
                fbc = zend_std_get_static_method(called_scope, Z_STR_P(method), NULL);
            }
            if (UNEXPECTED(fbc == NULL)) {
                if (EXPECTED(!EG(exception))) {
                    zend_undefined_method(called_scope, Z_STR_P(method));
                }
                return NULL;
            }
            if (!(fbc->common.fn_flags & ZEND_ACC_STATIC)) {
                zend_non_static_method_call(fbc);
                if (fbc->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
                    zend_string_release_ex(fbc->common.function_name, 0);
                    zend_free_trampoline(fbc);
                }
                return NULL;
            }
            object_or_called_scope = called_scope;
        } else {
            zend_object *object = Z_OBJ_P(obj);
 
            fbc = Z_OBJ_HT_P(obj)->get_method(&object, Z_STR_P(method), NULL);
            if (UNEXPECTED(fbc == NULL)) {
                if (EXPECTED(!EG(exception))) {
                    zend_undefined_method(object->ce, Z_STR_P(method));
                }
                return NULL;
            }
 
            if ((fbc->common.fn_flags & ZEND_ACC_STATIC) != 0) {
                object_or_called_scope = object->ce;
            } else {
                call_info |= ZEND_CALL_RELEASE_THIS | ZEND_CALL_HAS_THIS;
                GC_ADDREF(object); /* For $this pointer */
                object_or_called_scope = object;
            }
        }
    } else {
        zend_throw_error(NULL, "Array callback must have exactly two elements");
        return NULL;
    }
 
    if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
        init_func_run_time_cache(&fbc->op_array);
    }
 
    return zend_vm_stack_push_call_frame(call_info,
        fbc, num_args, object_or_called_scope);
}
/* }}} */
 
#define ZEND_FAKE_OP_ARRAY ((zend_op_array*)(intptr_t)-1)
 
static zend_never_inline zend_op_array* ZEND_FASTCALL zend_include_or_eval(zval *inc_filename_zv, int type) /* {{{ */
{
    zend_op_array *new_op_array = NULL;
    zend_string *tmp_inc_filename;
    zend_string *inc_filename = zval_try_get_tmp_string(inc_filename_zv, &tmp_inc_filename);
    if (UNEXPECTED(!inc_filename)) {
        return NULL;
    }
 
    switch (type) {
        case ZEND_INCLUDE_ONCE:
        case ZEND_REQUIRE_ONCE: {
                zend_file_handle file_handle;
                zend_string *resolved_path;
 
                resolved_path = zend_resolve_path(inc_filename);
                if (EXPECTED(resolved_path)) {
                    if (zend_hash_exists(&EG(included_files), resolved_path)) {
                        new_op_array = ZEND_FAKE_OP_ARRAY;
                        zend_string_release_ex(resolved_path, 0);
                        break;
                    }
                } else if (UNEXPECTED(EG(exception))) {
                    break;
                } else if (UNEXPECTED(strlen(ZSTR_VAL(inc_filename)) != ZSTR_LEN(inc_filename))) {
                    zend_message_dispatcher(
                        (type == ZEND_INCLUDE_ONCE) ?
                            ZMSG_FAILED_INCLUDE_FOPEN : ZMSG_FAILED_REQUIRE_FOPEN,
                            ZSTR_VAL(inc_filename));
                    break;
                } else {
                    resolved_path = zend_string_copy(inc_filename);
                }
 
                zend_stream_init_filename_ex(&file_handle, resolved_path);
                if (SUCCESS == zend_stream_open(&file_handle)) {
 
                    if (!file_handle.opened_path) {
                        file_handle.opened_path = zend_string_copy(resolved_path);
                    }
 
                    if (zend_hash_add_empty_element(&EG(included_files), file_handle.opened_path)) {
                        new_op_array = zend_compile_file(&file_handle, (type==ZEND_INCLUDE_ONCE?ZEND_INCLUDE:ZEND_REQUIRE));
                    } else {
                        new_op_array = ZEND_FAKE_OP_ARRAY;
                    }
                } else if (!EG(exception)) {
                    zend_message_dispatcher(
                        (type == ZEND_INCLUDE_ONCE) ?
                            ZMSG_FAILED_INCLUDE_FOPEN : ZMSG_FAILED_REQUIRE_FOPEN,
                            ZSTR_VAL(inc_filename));
                }
                zend_destroy_file_handle(&file_handle);
                zend_string_release_ex(resolved_path, 0);
            }
            break;
        case ZEND_INCLUDE:
        case ZEND_REQUIRE:
            if (UNEXPECTED(strlen(ZSTR_VAL(inc_filename)) != ZSTR_LEN(inc_filename))) {
                zend_message_dispatcher(
                    (type == ZEND_INCLUDE) ?
                        ZMSG_FAILED_INCLUDE_FOPEN : ZMSG_FAILED_REQUIRE_FOPEN,
                        ZSTR_VAL(inc_filename));
                break;
            }
            new_op_array = compile_filename(type, inc_filename);
            break;
        case ZEND_EVAL: {
                char *eval_desc = zend_make_compiled_string_description("eval()'d code");
                new_op_array = zend_compile_string(inc_filename, eval_desc, ZEND_COMPILE_POSITION_AFTER_OPEN_TAG);
                efree(eval_desc);
            }
            break;
        EMPTY_SWITCH_DEFAULT_CASE()
    }
 
    zend_tmp_string_release(tmp_inc_filename);
    return new_op_array;
}
/* }}} */
 
static zend_never_inline bool ZEND_FASTCALL zend_fe_reset_iterator(zval *array_ptr, int by_ref OPLINE_DC EXECUTE_DATA_DC) /* {{{ */
{
    zend_class_entry *ce = Z_OBJCE_P(array_ptr);
    zend_object_iterator *iter = ce->get_iterator(ce, array_ptr, by_ref);
    bool is_empty;
 
    if (UNEXPECTED(!iter) || UNEXPECTED(EG(exception))) {
        if (iter) {
            OBJ_RELEASE(&iter->std);
        }
        if (!EG(exception)) {
            zend_throw_exception_ex(NULL, 0, "Object of type %s did not create an Iterator", ZSTR_VAL(ce->name));
        }
        ZVAL_UNDEF(EX_VAR(opline->result.var));
        return 1;
    }
 
    iter->index = 0;
    if (iter->funcs->rewind) {
        iter->funcs->rewind(iter);
        if (UNEXPECTED(EG(exception) != NULL)) {
            OBJ_RELEASE(&iter->std);
            ZVAL_UNDEF(EX_VAR(opline->result.var));
            return 1;
        }
    }
 
    is_empty = iter->funcs->valid(iter) != SUCCESS;
 
    if (UNEXPECTED(EG(exception) != NULL)) {
        OBJ_RELEASE(&iter->std);
        ZVAL_UNDEF(EX_VAR(opline->result.var));
        return 1;
    }
    iter->index = -1; /* will be set to 0 before using next handler */
 
    ZVAL_OBJ(EX_VAR(opline->result.var), &iter->std);
    Z_FE_ITER_P(EX_VAR(opline->result.var)) = (uint32_t)-1;
 
    return is_empty;
}
/* }}} */
 
static zend_always_inline zend_result _zend_quick_get_constant(
        const zval *key, uint32_t flags, bool check_defined_only OPLINE_DC EXECUTE_DATA_DC) /* {{{ */
{
    zval *zv;
    zend_constant *c = NULL;
 
    /* null/true/false are resolved during compilation, so don't check for them here. */
    zv = zend_hash_find_known_hash(EG(zend_constants), Z_STR_P(key));
    if (zv) {
        c = (zend_constant*)Z_PTR_P(zv);
    } else if (flags & IS_CONSTANT_UNQUALIFIED_IN_NAMESPACE) {
        key++;
        zv = zend_hash_find_known_hash(EG(zend_constants), Z_STR_P(key));
        if (zv) {
            c = (zend_constant*)Z_PTR_P(zv);
        }
    }
 
    if (!c) {
        if (!check_defined_only) {
            zend_throw_error(NULL, "Undefined constant \"%s\"", Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
            ZVAL_UNDEF(EX_VAR(opline->result.var));
        }
        return FAILURE;
    }
 
    if (!check_defined_only) {
        ZVAL_COPY_OR_DUP(EX_VAR(opline->result.var), &c->value);
        if (ZEND_CONSTANT_FLAGS(c) & CONST_DEPRECATED) {
            zend_error(E_DEPRECATED, "Constant %s is deprecated", ZSTR_VAL(c->name));
            return SUCCESS;
        }
    }
 
    CACHE_PTR(opline->extended_value, c);
    return SUCCESS;
}
/* }}} */
 
static zend_never_inline void ZEND_FASTCALL zend_quick_get_constant(
        const zval *key, uint32_t flags OPLINE_DC EXECUTE_DATA_DC) /* {{{ */
{
    _zend_quick_get_constant(key, flags, 0 OPLINE_CC EXECUTE_DATA_CC);
} /* }}} */
 
static zend_never_inline zend_result ZEND_FASTCALL zend_quick_check_constant(
        const zval *key OPLINE_DC EXECUTE_DATA_DC) /* {{{ */
{
    return _zend_quick_get_constant(key, 0, 1 OPLINE_CC EXECUTE_DATA_CC);
} /* }}} */
 
static zend_always_inline uint32_t zend_get_arg_offset_by_name(
        zend_function *fbc, zend_string *arg_name, void **cache_slot) {
    if (EXPECTED(*cache_slot == fbc)) {
        return *(uintptr_t *)(cache_slot + 1);
    }
 
    // TODO: Use a hash table?
    uint32_t num_args = fbc->common.num_args;
    if (EXPECTED(fbc->type == ZEND_USER_FUNCTION)
            || EXPECTED(fbc->common.fn_flags & ZEND_ACC_USER_ARG_INFO)) {
        for (uint32_t i = 0; i < num_args; i++) {
            zend_arg_info *arg_info = &fbc->op_array.arg_info[i];
            if (zend_string_equals(arg_name, arg_info->name)) {
                *cache_slot = fbc;
                *(uintptr_t *)(cache_slot + 1) = i;
                return i;
            }
        }
    } else {
        for (uint32_t i = 0; i < num_args; i++) {
            zend_internal_arg_info *arg_info = &fbc->internal_function.arg_info[i];
            size_t len = strlen(arg_info->name);
            if (zend_string_equals_cstr(arg_name, arg_info->name, len)) {
                *cache_slot = fbc;
                *(uintptr_t *)(cache_slot + 1) = i;
                return i;
            }
        }
    }
 
    if (fbc->common.fn_flags & ZEND_ACC_VARIADIC) {
        *cache_slot = fbc;
        *(uintptr_t *)(cache_slot + 1) = fbc->common.num_args;
        return fbc->common.num_args;
    }
 
    return (uint32_t) -1;
}
 
zval * ZEND_FASTCALL zend_handle_named_arg(
        zend_execute_data **call_ptr, zend_string *arg_name,
        uint32_t *arg_num_ptr, void **cache_slot) {
    zend_execute_data *call = *call_ptr;
    zend_function *fbc = call->func;
    uint32_t arg_offset = zend_get_arg_offset_by_name(fbc, arg_name, cache_slot);
    if (UNEXPECTED(arg_offset == (uint32_t) -1)) {
        zend_throw_error(NULL, "Unknown named parameter $%s", ZSTR_VAL(arg_name));
        return NULL;
    }
 
    zval *arg;
    if (UNEXPECTED(arg_offset == fbc->common.num_args)) {
        /* Unknown named parameter that will be collected into a variadic. */
        if (!(ZEND_CALL_INFO(call) & ZEND_CALL_HAS_EXTRA_NAMED_PARAMS)) {
            ZEND_ADD_CALL_FLAG(call, ZEND_CALL_HAS_EXTRA_NAMED_PARAMS);
            call->extra_named_params = zend_new_array(0);
        }
 
        arg = zend_hash_add_empty_element(call->extra_named_params, arg_name);
        if (!arg) {
            zend_throw_error(NULL, "Named parameter $%s overwrites previous argument",
                ZSTR_VAL(arg_name));
            return NULL;
        }
        *arg_num_ptr = arg_offset + 1;
        return arg;
    }
 
    uint32_t current_num_args = ZEND_CALL_NUM_ARGS(call);
    // TODO: We may wish to optimize the arg_offset == current_num_args case,
    // which is probably common (if the named parameters are in order of declaration).
    if (arg_offset >= current_num_args) {
        uint32_t new_num_args = arg_offset + 1;
        ZEND_CALL_NUM_ARGS(call) = new_num_args;
 
        uint32_t num_extra_args = new_num_args - current_num_args;
        zend_vm_stack_extend_call_frame(call_ptr, current_num_args, num_extra_args);
        call = *call_ptr;
 
        arg = ZEND_CALL_VAR_NUM(call, arg_offset);
        if (num_extra_args > 1) {
            zval *zv = ZEND_CALL_VAR_NUM(call, current_num_args);
            do {
                ZVAL_UNDEF(zv);
                zv++;
            } while (zv != arg);
            ZEND_ADD_CALL_FLAG(call, ZEND_CALL_MAY_HAVE_UNDEF);
        }
    } else {
        arg = ZEND_CALL_VAR_NUM(call, arg_offset);
        if (UNEXPECTED(!Z_ISUNDEF_P(arg))) {
            zend_throw_error(NULL, "Named parameter $%s overwrites previous argument",
                ZSTR_VAL(arg_name));
            return NULL;
        }
    }
 
    *arg_num_ptr = arg_offset + 1;
    return arg;
}
 
static zend_execute_data *start_fake_frame(zend_execute_data *call, const zend_op *opline) {
    zend_execute_data *old_prev_execute_data = call->prev_execute_data;
    call->prev_execute_data = EG(current_execute_data);
    call->opline = opline;
    EG(current_execute_data) = call;
    return old_prev_execute_data;
}
 
static void end_fake_frame(zend_execute_data *call, zend_execute_data *old_prev_execute_data) {
    zend_execute_data *prev_execute_data = call->prev_execute_data;
    EG(current_execute_data) = prev_execute_data;
    call->prev_execute_data = old_prev_execute_data;
    if (UNEXPECTED(EG(exception)) && ZEND_USER_CODE(prev_execute_data->func->common.type)) {
        zend_rethrow_exception(prev_execute_data);
    }
}
 
ZEND_API zend_result ZEND_FASTCALL zend_handle_undef_args(zend_execute_data *call) {
    zend_function *fbc = call->func;
    if (fbc->type == ZEND_USER_FUNCTION) {
        zend_op_array *op_array = &fbc->op_array;
        uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
        for (uint32_t i = 0; i < num_args; i++) {
            zval *arg = ZEND_CALL_VAR_NUM(call, i);
            if (!Z_ISUNDEF_P(arg)) {
                continue;
            }
 
            zend_op *opline = &op_array->opcodes[i];
            if (EXPECTED(opline->opcode == ZEND_RECV_INIT)) {
                zval *default_value = RT_CONSTANT(opline, opline->op2);
                if (Z_OPT_TYPE_P(default_value) == IS_CONSTANT_AST) {
                    if (UNEXPECTED(!RUN_TIME_CACHE(op_array))) {
                        init_func_run_time_cache(op_array);
                    }
 
                    void *run_time_cache = RUN_TIME_CACHE(op_array);
                    zval *cache_val =
                        (zval *) ((char *) run_time_cache + Z_CACHE_SLOT_P(default_value));
 
                    if (Z_TYPE_P(cache_val) != IS_UNDEF) {
                        /* We keep in cache only not refcounted values */
                        ZVAL_COPY_VALUE(arg, cache_val);
                    } else {
                        /* Update constant inside a temporary zval, to make sure the CONSTANT_AST
                         * value is not accessible through back traces. */
                        zval tmp;
                        ZVAL_COPY(&tmp, default_value);
                        zend_execute_data *old = start_fake_frame(call, opline);
                        zend_result ret = zval_update_constant_ex(&tmp, fbc->op_array.scope);
                        end_fake_frame(call, old);
                        if (UNEXPECTED(ret == FAILURE)) {
                            zval_ptr_dtor_nogc(&tmp);
                            return FAILURE;
                        }
                        ZVAL_COPY_VALUE(arg, &tmp);
                        if (!Z_REFCOUNTED(tmp)) {
                            ZVAL_COPY_VALUE(cache_val, &tmp);
                        }
                    }
                } else {
                    ZVAL_COPY(arg, default_value);
                }
            } else {
                ZEND_ASSERT(opline->opcode == ZEND_RECV);
                zend_execute_data *old = start_fake_frame(call, opline);
                zend_argument_error(zend_ce_argument_count_error, i + 1, "not passed");
                end_fake_frame(call, old);
                return FAILURE;
            }
        }
 
        return SUCCESS;
    } else {
        if (fbc->common.fn_flags & ZEND_ACC_USER_ARG_INFO) {
            /* Magic function, let it deal with it. */
            return SUCCESS;
        }
 
        uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
        for (uint32_t i = 0; i < num_args; i++) {
            zval *arg = ZEND_CALL_VAR_NUM(call, i);
            if (!Z_ISUNDEF_P(arg)) {
                continue;
            }
 
            zend_internal_arg_info *arg_info = &fbc->internal_function.arg_info[i];
            if (i < fbc->common.required_num_args) {
                zend_execute_data *old = start_fake_frame(call, NULL);
                zend_argument_error(zend_ce_argument_count_error, i + 1, "not passed");
                end_fake_frame(call, old);
                return FAILURE;
            }
 
            zval default_value;
            if (zend_get_default_from_internal_arg_info(&default_value, arg_info) == FAILURE) {
                zend_execute_data *old = start_fake_frame(call, NULL);
                zend_argument_error(zend_ce_argument_count_error, i + 1,
                    "must be passed explicitly, because the default value is not known");
                end_fake_frame(call, old);
                return FAILURE;
            }
 
            if (Z_TYPE(default_value) == IS_CONSTANT_AST) {
                zend_execute_data *old = start_fake_frame(call, NULL);
                zend_result ret = zval_update_constant_ex(&default_value, fbc->common.scope);
                end_fake_frame(call, old);
                if (ret == FAILURE) {
                    return FAILURE;
                }
            }
 
            ZVAL_COPY_VALUE(arg, &default_value);
            if (ZEND_ARG_SEND_MODE(arg_info) & ZEND_SEND_BY_REF) {
                ZVAL_NEW_REF(arg, arg);
            }
        }
    }
 
    return SUCCESS;
}
 
ZEND_API void ZEND_FASTCALL zend_free_extra_named_params(zend_array *extra_named_params)
{
    /* Extra named params may be shared. */
    zend_array_release(extra_named_params);
}
 
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
/* Special versions of functions that sets EX(opline) before calling zend_vm_stack_extend() */
static zend_always_inline zend_execute_data *_zend_vm_stack_push_call_frame_ex(uint32_t used_stack, uint32_t call_info, zend_function *func, uint32_t num_args, void *object_or_called_scope) /* {{{ */
{
    zend_execute_data *call = (zend_execute_data*)EG(vm_stack_top);
 
    ZEND_ASSERT_VM_STACK_GLOBAL;
 
    if (UNEXPECTED(used_stack > (size_t)(((char*)EG(vm_stack_end)) - (char*)call))) {
        EX(opline) = opline; /* this is the only difference */
        call = (zend_execute_data*)zend_vm_stack_extend(used_stack);
        ZEND_ASSERT_VM_STACK_GLOBAL;
        zend_vm_init_call_frame(call, call_info | ZEND_CALL_ALLOCATED, func, num_args, object_or_called_scope);
        return call;
    } else {
        EG(vm_stack_top) = (zval*)((char*)call + used_stack);
        zend_vm_init_call_frame(call, call_info, func, num_args, object_or_called_scope);
        return call;
    }
} /* }}} */
 
static zend_always_inline zend_execute_data *_zend_vm_stack_push_call_frame(uint32_t call_info, zend_function *func, uint32_t num_args, void *object_or_called_scope) /* {{{ */
{
    uint32_t used_stack = zend_vm_calc_used_stack(num_args, func);
 
    return _zend_vm_stack_push_call_frame_ex(used_stack, call_info,
        func, num_args, object_or_called_scope);
} /* }}} */
#else
# define _zend_vm_stack_push_call_frame_ex zend_vm_stack_push_call_frame_ex
# define _zend_vm_stack_push_call_frame    zend_vm_stack_push_call_frame
#endif
 
#ifdef ZEND_VM_TRACE_HANDLERS
# include "zend_vm_trace_handlers.h"
#elif defined(ZEND_VM_TRACE_LINES)
# include "zend_vm_trace_lines.h"
#elif defined(ZEND_VM_TRACE_MAP)
# include "zend_vm_trace_map.h"
#elif defined(ZEND_VERIFY_TYPE_INFERENCE)
# include "zend_verify_type_inference.h"
#endif
 
#define ZEND_VM_NEXT_OPCODE_EX(check_exception, skip) \
    CHECK_SYMBOL_TABLES() \
    if (check_exception) { \
        OPLINE = EX(opline) + (skip); \
    } else { \
        ZEND_ASSERT(!EG(exception)); \
        OPLINE = opline + (skip); \
    } \
    ZEND_VM_CONTINUE()
 
#define ZEND_VM_NEXT_OPCODE_CHECK_EXCEPTION() \
    ZEND_VM_NEXT_OPCODE_EX(1, 1)
 
#define ZEND_VM_NEXT_OPCODE() \
    ZEND_VM_NEXT_OPCODE_EX(0, 1)
 
#define ZEND_VM_SET_NEXT_OPCODE(new_op) \
    CHECK_SYMBOL_TABLES() \
    OPLINE = new_op
 
#define ZEND_VM_SET_OPCODE_NO_INTERRUPT(new_op) \
    CHECK_SYMBOL_TABLES() \
    OPLINE = new_op
 
#define ZEND_VM_SET_OPCODE(new_op) \
    ZEND_VM_SET_OPCODE_NO_INTERRUPT(new_op); \
    ZEND_VM_INTERRUPT_CHECK()
 
#define ZEND_VM_SET_RELATIVE_OPCODE(opline, offset) \
    ZEND_VM_SET_OPCODE(ZEND_OFFSET_TO_OPLINE(opline, offset))
 
#define ZEND_VM_JMP_EX(new_op, check_exception) do { \
        if (check_exception && UNEXPECTED(EG(exception))) { \
            HANDLE_EXCEPTION(); \
        } \
        ZEND_VM_SET_OPCODE(new_op); \
        ZEND_VM_CONTINUE(); \
    } while (0)
 
#define ZEND_VM_JMP(new_op) \
    ZEND_VM_JMP_EX(new_op, 1)
 
#define ZEND_VM_INC_OPCODE() \
    OPLINE++
 
 
#define ZEND_VM_REPEATABLE_OPCODE \
    do {
#define ZEND_VM_REPEAT_OPCODE(_opcode) \
    } while (UNEXPECTED((++opline)->opcode == _opcode)); \
    OPLINE = opline; \
    ZEND_VM_CONTINUE()
#define ZEND_VM_SMART_BRANCH(_result, _check) do { \
        if ((_check) && UNEXPECTED(EG(exception))) { \
            OPLINE = EX(opline); \
        } else if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPZ|IS_TMP_VAR))) { \
            if (_result) { \
                ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
            } else { \
                ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
            } \
        } else if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPNZ|IS_TMP_VAR))) { \
            if (!(_result)) { \
                ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
            } else { \
                ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
            } \
        } else { \
            ZVAL_BOOL(EX_VAR(opline->result.var), _result); \
            ZEND_VM_SET_NEXT_OPCODE(opline + 1); \
        } \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_JMPZ(_result, _check) do { \
        if ((_check) && UNEXPECTED(EG(exception))) { \
            OPLINE = EX(opline); \
        } else if (_result) { \
            ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
        } else { \
            ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
        } \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_JMPNZ(_result, _check) do { \
        if ((_check) && UNEXPECTED(EG(exception))) { \
            OPLINE = EX(opline); \
        } else if (!(_result)) { \
            ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
        } else { \
            ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
        } \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_NONE(_result, _check) do { \
        ZVAL_BOOL(EX_VAR(opline->result.var), _result); \
        ZEND_VM_NEXT_OPCODE_EX(_check, 1); \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_TRUE() do { \
        if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPNZ|IS_TMP_VAR))) { \
            ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
        } else if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPZ|IS_TMP_VAR))) { \
            ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
        } else { \
            ZVAL_TRUE(EX_VAR(opline->result.var)); \
            ZEND_VM_SET_NEXT_OPCODE(opline + 1); \
        } \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_TRUE_JMPZ() do { \
        ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_TRUE_JMPNZ() do { \
        ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_TRUE_NONE() do { \
        ZVAL_TRUE(EX_VAR(opline->result.var)); \
        ZEND_VM_NEXT_OPCODE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_FALSE() do { \
        if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPNZ|IS_TMP_VAR))) { \
            ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
        } else if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPZ|IS_TMP_VAR))) { \
            ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
        } else { \
            ZVAL_FALSE(EX_VAR(opline->result.var)); \
            ZEND_VM_SET_NEXT_OPCODE(opline + 1); \
        } \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_FALSE_JMPZ() do { \
        ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_FALSE_JMPNZ() do { \
        ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
        ZEND_VM_CONTINUE(); \
    } while (0)
#define ZEND_VM_SMART_BRANCH_FALSE_NONE() do { \
        ZVAL_FALSE(EX_VAR(opline->result.var)); \
        ZEND_VM_NEXT_OPCODE(); \
    } while (0)
 
#ifdef __GNUC__
# define ZEND_VM_GUARD(name) __asm__("#" #name)
#else
# define ZEND_VM_GUARD(name)
#endif
 
#define UNDEF_RESULT() do { \
        if (opline->result_type & (IS_VAR | IS_TMP_VAR)) { \
            ZVAL_UNDEF(EX_VAR(opline->result.var)); \
        } \
    } while (0)
 
/* This callback disables optimization of "vm_stack_data" variable in VM */
ZEND_API void (ZEND_FASTCALL *zend_touch_vm_stack_data)(void *vm_stack_data) = NULL;
 
#include "zend_vm_execute.h"
 
ZEND_API zend_result zend_set_user_opcode_handler(zend_uchar opcode, user_opcode_handler_t handler)
{
    if (opcode != ZEND_USER_OPCODE) {
        if (handler == NULL) {
            /* restore the original handler */
            zend_user_opcodes[opcode] = opcode;
        } else {
            zend_user_opcodes[opcode] = ZEND_USER_OPCODE;
        }
        zend_user_opcode_handlers[opcode] = handler;
        return SUCCESS;
    }
    return FAILURE;
}
 
ZEND_API user_opcode_handler_t zend_get_user_opcode_handler(zend_uchar opcode)
{
    return zend_user_opcode_handlers[opcode];
}
 
ZEND_API zval *zend_get_zval_ptr(const zend_op *opline, int op_type, const znode_op *node, const zend_execute_data *execute_data)
{
    zval *ret;
 
    switch (op_type) {
        case IS_CONST:
            ret = RT_CONSTANT(opline, *node);
            break;
        case IS_TMP_VAR:
        case IS_VAR:
        case IS_CV:
            ret = EX_VAR(node->var);
            break;
        default:
            ret = NULL;
            break;
    }
    return ret;
}