text: /*
     +----------------------------------------------------------------------+
     | Zend Engine                                                          |
     +----------------------------------------------------------------------+
     | Copyright (c) 1998-2016 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@zend.com>                                |
     |          Zeev Suraski <zeev@zend.com>                                |
     |          Dmitry Stogov <dmitry@zend.com>                             |
     +----------------------------------------------------------------------+
  */
  
  /* $Id$ */
  
  #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"
  
  /* Virtual current working directory support */
  #include "zend_virtual_cwd.h"
  
  #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, ex, should_free, type) _get_zval_ptr(op_type, node, ex, should_free, type)
  #define get_zval_ptr_deref(op_type, node, ex, should_free, type) _get_zval_ptr_deref(op_type, node, ex, should_free, type)
  #define get_zval_ptr_r(op_type, node, ex, should_free) _get_zval_ptr_r(op_type, node, ex, should_free)
  #define get_zval_ptr_r_deref(op_type, node, ex, should_free) _get_zval_ptr_r_deref(op_type, node, ex, should_free)
  #define get_zval_ptr_undef(op_type, node, ex, should_free, type) _get_zval_ptr_undef(op_type, node, ex, should_free, type)
  #define get_zval_ptr_ptr(op_type, node, ex, should_free, type) _get_zval_ptr_ptr(op_type, node, ex, should_free, type)
  #define get_zval_ptr_ptr_undef(op_type, node, ex, should_free, type) _get_zval_ptr_ptr(op_type, node, ex, should_free, type)
  #define get_obj_zval_ptr(op_type, node, ex, should_free, type) _get_obj_zval_ptr(op_type, node, ex, should_free, type)
  #define get_obj_zval_ptr_undef(op_type, node, ex, should_free, type) _get_obj_zval_ptr_undef(op_type, node, ex, should_free, type)
  #define get_obj_zval_ptr_ptr(op_type, node, ex, should_free, type) _get_obj_zval_ptr_ptr(op_type, node, ex, should_free, type)
  
  /* Prototypes */
  static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array);
  static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array);
  static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array);
  
  #define RETURN_VALUE_USED(opline) (!((opline)->result_type & EXT_TYPE_UNUSED))
  
  static ZEND_FUNCTION(pass)
  {
  }
  
  static 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 */
  	NULL,                   /* arg_info          */
  	ZEND_FN(pass),          /* handler           */
  	NULL                    /* module            */
  };
  
  #undef zval_ptr_dtor
  #define zval_ptr_dtor(zv) i_zval_ptr_dtor(zv ZEND_FILE_LINE_CC)
  
  #define READY_TO_DESTROY(zv) \
  	(UNEXPECTED(zv) && Z_REFCOUNTED_P(zv) && Z_REFCOUNT_P(zv) == 1)
  
  #define EXTRACT_ZVAL_PTR(zv, check_null) do {		\
  	zval *__zv = (zv);								\
  	if (EXPECTED(Z_TYPE_P(__zv) == IS_INDIRECT)) {	\
  		if (!(check_null) ||						\
  		    EXPECTED(Z_INDIRECT_P(__zv))) {			\
  			ZVAL_COPY(__zv, Z_INDIRECT_P(__zv));	\
  		}											\
  	}												\
  } while (0)
  
  #define FREE_OP(should_free) \
  	if (should_free) { \
  		zval_ptr_dtor_nogc(should_free); \
  	}
  
  #define FREE_UNFETCHED_OP(type, var) \
  	if ((type) & (IS_TMP_VAR|IS_VAR)) { \
  		zval_ptr_dtor_nogc(EX_VAR(var)); \
  	}
  
  #define FREE_OP_VAR_PTR(should_free) \
  	if (should_free) { \
  		zval_ptr_dtor_nogc(should_free); \
  	}
  
  /* End of zend_execute_locks.h */
  
  #define CV_DEF_OF(i) (EX(func)->op_array.vars[i])
  
  #define CTOR_CALL_BIT    0x1
  #define CTOR_USED_BIT    0x2
  
  #define IS_CTOR_CALL(ce) (((zend_uintptr_t)(ce)) & CTOR_CALL_BIT)
  #define IS_CTOR_USED(ce) (((zend_uintptr_t)(ce)) & CTOR_USED_BIT)
  
  #define ENCODE_CTOR(ce, used) \
  	((zend_class_entry*)(((zend_uintptr_t)(ce)) | CTOR_CALL_BIT | ((used) ? CTOR_USED_BIT : 0)))
  #define DECODE_CTOR(ce) \
  	((zend_class_entry*)(((zend_uintptr_t)(ce)) & ~(CTOR_CALL_BIT|CTOR_USED_BIT)))
  
  #define ZEND_VM_MAIN_STACK_PAGE_SLOTS (16 * 1024) /* should be a power of 2 */
  #define ZEND_VM_GENERATOR_STACK_PAGE_SLOTS (256)
  
  #define ZEND_VM_STACK_PAGE_SLOTS(gen) ((gen) ? ZEND_VM_GENERATOR_STACK_PAGE_SLOTS : ZEND_VM_MAIN_STACK_PAGE_SLOTS)
  
  #define ZEND_VM_STACK_PAGE_SIZE(gen)  (ZEND_VM_STACK_PAGE_SLOTS(gen) * sizeof(zval))
  
  #define ZEND_VM_STACK_FREE_PAGE_SIZE(gen) \
  	((ZEND_VM_STACK_PAGE_SLOTS(gen) - ZEND_VM_STACK_HEADER_SLOTS) * sizeof(zval))
  
  #define ZEND_VM_STACK_PAGE_ALIGNED_SIZE(gen, size) \
  	(((size) + (ZEND_VM_STACK_FREE_PAGE_SIZE(gen) - 1)) & ~(ZEND_VM_STACK_PAGE_SIZE(gen) - 1))
  
  static zend_always_inline zend_vm_stack zend_vm_stack_new_page(size_t size, zend_vm_stack prev) {
  	zend_vm_stack page = (zend_vm_stack)emalloc(size);
  
  	page->top = ZEND_VM_STACK_ELEMETS(page);
  	page->end = (zval*)((char*)page + size);
  	page->prev = prev;
  	return page;
  }
  
  ZEND_API void zend_vm_stack_init(void)
  {
  	EG(vm_stack) = zend_vm_stack_new_page(ZEND_VM_STACK_PAGE_SIZE(0 /* main stack */), NULL);
  	EG(vm_stack)->top++;
  	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 < ZEND_VM_STACK_FREE_PAGE_SIZE(0)) ?
  			ZEND_VM_STACK_PAGE_SIZE(0) : ZEND_VM_STACK_PAGE_ALIGNED_SIZE(0, 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);
  }
  
  static zend_always_inline zval *_get_zval_ptr_tmp(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free)
  {
  	zval *ret = EX_VAR(var);
  	*should_free = ret;
  
  	ZEND_ASSERT(Z_TYPE_P(ret) != IS_REFERENCE);
  
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_var(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free)
  {
  	zval *ret = EX_VAR(var);
  
  	*should_free = ret;
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_var_deref(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free)
  {
  	zval *ret = EX_VAR(var);
  
  	*should_free = ret;
  	ZVAL_DEREF(ret);
  	return ret;
  }
  
  static zend_never_inline ZEND_COLD void zval_undefined_cv(uint32_t var, const zend_execute_data *execute_data)
  {
  	zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
  
  	zend_error(E_NOTICE, "Undefined variable: %s", ZSTR_VAL(cv));
  }
  
  static zend_never_inline zval *_get_zval_cv_lookup(zval *ptr, uint32_t var, int type, const zend_execute_data *execute_data)
  {
  	switch (type) {
  		case BP_VAR_R:
  		case BP_VAR_UNSET:
  			zval_undefined_cv(var, execute_data);
  			/* break missing intentionally */
  		case BP_VAR_IS:
  			ptr = &EG(uninitialized_zval);
  			break;
  		case BP_VAR_RW:
  			zval_undefined_cv(var, execute_data);
  			/* break missing intentionally */
  		case BP_VAR_W:
  			ZVAL_NULL(ptr);
  			break;
  	}
  	return ptr;
  }
  
  static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_R(zval *ptr, uint32_t var, const zend_execute_data *execute_data)
  {
  	zval_undefined_cv(var, execute_data);
  	return &EG(uninitialized_zval);
  }
  
  static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_UNSET(zval *ptr, uint32_t var, const zend_execute_data *execute_data)
  {
  	zval_undefined_cv(var, execute_data);
  	return &EG(uninitialized_zval);
  }
  
  static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_RW(zval *ptr, uint32_t var, const zend_execute_data *execute_data)
  {
  	ZVAL_NULL(ptr);
  	zval_undefined_cv(var, execute_data);
  	return ptr;
  }
  
  static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_W(zval *ptr, uint32_t var, const zend_execute_data *execute_data)
  {
  	ZVAL_NULL(ptr);
  	return ptr;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv(const zend_execute_data *execute_data, uint32_t var, int type)
  {
  	zval *ret = EX_VAR(var);
  
  	if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
  		return _get_zval_cv_lookup(ret, var, type, execute_data);
  	}
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_undef(const zend_execute_data *execute_data, uint32_t var)
  {
  	return EX_VAR(var);
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_deref(const zend_execute_data *execute_data, uint32_t var, int type)
  {
  	zval *ret = EX_VAR(var);
  
  	if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
  		return _get_zval_cv_lookup(ret, var, type, execute_data);
  	}
  	ZVAL_DEREF(ret);
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_R(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
  		return _get_zval_cv_lookup_BP_VAR_R(ret, var, execute_data);
  	}
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_R(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
  		return _get_zval_cv_lookup_BP_VAR_R(ret, var, execute_data);
  	}
  	ZVAL_DEREF(ret);
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_UNSET(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
  		return _get_zval_cv_lookup_BP_VAR_UNSET(ret, var, execute_data);
  	}
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_UNSET(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
  		return _get_zval_cv_lookup_BP_VAR_UNSET(ret, var, execute_data);
  	}
  	ZVAL_DEREF(ret);
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_IS(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_IS(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	ZVAL_DEREF(ret);
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_RW(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
  		return _get_zval_cv_lookup_BP_VAR_RW(ret, var, execute_data);
  	}
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_RW(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
  		return _get_zval_cv_lookup_BP_VAR_RW(ret, var, execute_data);
  	}
  	ZVAL_DEREF(ret);
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_W(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	if (Z_TYPE_P(ret) == IS_UNDEF) {
  		return _get_zval_cv_lookup_BP_VAR_W(ret, var, execute_data);
  	}
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_undef_BP_VAR_W(const zend_execute_data *execute_data, uint32_t var)
  {
  	return EX_VAR(var);
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_undef_BP_VAR_RW(const zend_execute_data *execute_data, uint32_t var)
  {
  	return EX_VAR(var);
  }
  
  static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_W(const zend_execute_data *execute_data, uint32_t var)
  {
  	zval *ret = EX_VAR(var);
  
  	if (Z_TYPE_P(ret) == IS_UNDEF) {
  		return _get_zval_cv_lookup_BP_VAR_W(ret, var, execute_data);
  	}
  	ZVAL_DEREF(ret);
  	return ret;
  }
  
  static zend_always_inline zval *_get_zval_ptr(int op_type, znode_op node, const zend_execute_data *execute_data, zend_free_op *should_free, int type)
  {
  	if (op_type & (IS_TMP_VAR|IS_VAR)) {
  		if (op_type == IS_TMP_VAR) {
  			return _get_zval_ptr_tmp(node.var, execute_data, should_free);
  		} else {
  			ZEND_ASSERT(op_type == IS_VAR);
  			return _get_zval_ptr_var(node.var, execute_data, should_free);
  		}
  	} else {
  		*should_free = NULL;
  		if (op_type == IS_CONST) {
  			return EX_CONSTANT(node);
  		} else if (op_type == IS_CV) {
  			return _get_zval_ptr_cv(execute_data, node.var, type);
  		} else {
  			return NULL;
  		}
  	}
  }
  
  static zend_always_inline zval *_get_zval_ptr_r(int op_type, znode_op node, const zend_execute_data *execute_data, zend_free_op *should_free)
  {
  	if (op_type & (IS_TMP_VAR|IS_VAR)) {
  		if (op_type == IS_TMP_VAR) {
  			return _get_zval_ptr_tmp(node.var, execute_data, should_free);
  		} else {
  			ZEND_ASSERT(op_type == IS_VAR);
  			return _get_zval_ptr_var(node.var, execute_data, should_free);
  		}
  	} else {
  		*should_free = NULL;
  		if (op_type == IS_CONST) {
  			return EX_CONSTANT(node);
  		} else if (op_type == IS_CV) {
  			return _get_zval_ptr_cv_BP_VAR_R(execute_data, node.var);
  		} else {
  			return NULL;
  		}
  	}
  }
  
  static zend_always_inline zval *_get_zval_ptr_deref(int op_type, znode_op node, const zend_execute_data *execute_data, zend_free_op *should_free, int type)
  {
  	if (op_type & (IS_TMP_VAR|IS_VAR)) {
  		if (op_type == IS_TMP_VAR) {
  			return _get_zval_ptr_tmp(node.var, execute_data, should_free);
  		} else {
  			ZEND_ASSERT(op_type == IS_VAR);
  			return _get_zval_ptr_var_deref(node.var, execute_data, should_free);
  		}
  	} else {
  		*should_free = NULL;
  		if (op_type == IS_CONST) {
  			return EX_CONSTANT(node);
  		} else if (op_type == IS_CV) {
  			return _get_zval_ptr_cv_deref(execute_data, node.var, type);
  		} else {
  			return NULL;
  		}
  	}
  }
  
  static zend_always_inline zval *_get_zval_ptr_r_deref(int op_type, znode_op node, const zend_execute_data *execute_data, zend_free_op *should_free)
  {
  	if (op_type & (IS_TMP_VAR|IS_VAR)) {
  		if (op_type == IS_TMP_VAR) {
  			return _get_zval_ptr_tmp(node.var, execute_data, should_free);
  		} else {
  			ZEND_ASSERT(op_type == IS_VAR);
  			return _get_zval_ptr_var_deref(node.var, execute_data, should_free);
  		}
  	} else {
  		*should_free = NULL;
  		if (op_type == IS_CONST) {
  			return EX_CONSTANT(node);
  		} else if (op_type == IS_CV) {
  			return _get_zval_ptr_cv_deref_BP_VAR_R(execute_data, node.var);
  		} else {
  			return NULL;
  		}
  	}
  }
  
  static zend_always_inline zval *_get_zval_ptr_undef(int op_type, znode_op node, const zend_execute_data *execute_data, zend_free_op *should_free, int type)
  {
  	if (op_type & (IS_TMP_VAR|IS_VAR)) {
  		if (op_type == IS_TMP_VAR) {
  			return _get_zval_ptr_tmp(node.var, execute_data, should_free);
  		} else {
  			ZEND_ASSERT(op_type == IS_VAR);
  			return _get_zval_ptr_var(node.var, execute_data, should_free);
  		}
  	} else {
  		*should_free = NULL;
  		if (op_type == IS_CONST) {
  			return EX_CONSTANT(node);
  		} else if (op_type == IS_CV) {
  			return _get_zval_ptr_cv_undef(execute_data, node.var);
  		} else {
  			return NULL;
  		}
  	}
  }
  
  static zend_always_inline zval *_get_zval_ptr_ptr_var(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free)
  {
  	zval *ret = EX_VAR(var);
  
  	if (EXPECTED(Z_TYPE_P(ret) == IS_INDIRECT)) {
  		*should_free = NULL;
  		ret = Z_INDIRECT_P(ret);
  	} else {
  		*should_free = ret;
  	}
  	return ret;
  }
  
  static inline zval *_get_zval_ptr_ptr(int op_type, znode_op node, const zend_execute_data *execute_data, zend_free_op *should_free, int type)
  {
  	if (op_type == IS_CV) {
  		*should_free = NULL;
  		return _get_zval_ptr_cv(execute_data, node.var, type);
  	} else /* if (op_type == IS_VAR) */ {
  		ZEND_ASSERT(op_type == IS_VAR);
  		return _get_zval_ptr_ptr_var(node.var, execute_data, should_free);
  	}
  }
  
  static zend_always_inline zval *_get_obj_zval_ptr_unused(zend_execute_data *execute_data)
  {	
  	return &EX(This);
  }
  
  static inline zval *_get_obj_zval_ptr(int op_type, znode_op op, zend_execute_data *execute_data, zend_free_op *should_free, int type)
  {
  	if (op_type == IS_UNUSED) {
  		*should_free = NULL;
  		return &EX(This);
  	}
  	return get_zval_ptr(op_type, op, execute_data, should_free, type);
  }
  
  static inline zval *_get_obj_zval_ptr_undef(int op_type, znode_op op, zend_execute_data *execute_data, zend_free_op *should_free, int type)
  {
  	if (op_type == IS_UNUSED) {
  		*should_free = NULL;
  		return &EX(This);
  	}
  	return get_zval_ptr_undef(op_type, op, execute_data, should_free, type);
  }
  
  static inline zval *_get_obj_zval_ptr_ptr(int op_type, znode_op node, zend_execute_data *execute_data, zend_free_op *should_free, int type)
  {
  	if (op_type == IS_UNUSED) {
  		*should_free = NULL;
  		return &EX(This);
  	}
  	return get_zval_ptr_ptr(op_type, node, execute_data, should_free, type);
  }
  
  static inline void zend_assign_to_variable_reference(zval *variable_ptr, zval *value_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_REFCOUNT(ref)++;
  	zval_ptr_dtor(variable_ptr);
  	ZVAL_REF(variable_ptr, ref);
  }
  
  /* this should modify object only if it's empty */
  static inline int make_real_object(zval *object)
  {
  	if (UNEXPECTED(Z_TYPE_P(object) != IS_OBJECT)) {
  		if (EXPECTED(Z_TYPE_P(object) <= IS_FALSE)) {
  			/* nothing to destroy */
  		} else if (EXPECTED((Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0))) {
  			zval_ptr_dtor_nogc(object);
  		} else {
  			return 0;
  		}
  		object_init(object);
  		zend_error(E_WARNING, "Creating default object from empty value");
  	}
  	return 1;
  }
  
  static char * zend_verify_internal_arg_class_kind(const zend_internal_arg_info *cur_arg_info, char **class_name, zend_class_entry **pce)
  {
  	zend_string *key;
  	ALLOCA_FLAG(use_heap);
  
  	ZSTR_ALLOCA_INIT(key, cur_arg_info->class_name, strlen(cur_arg_info->class_name), use_heap);
  	*pce = zend_fetch_class(key, (ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD));
  	ZSTR_ALLOCA_FREE(key, use_heap);
  
  	*class_name = (*pce) ? ZSTR_VAL((*pce)->name) : (char*)cur_arg_info->class_name;
  	if (*pce && (*pce)->ce_flags & ZEND_ACC_INTERFACE) {
  		return "implement interface ";
  	} else {
  		return "be an instance of ";
  	}
  }
  
  static zend_always_inline zend_class_entry* zend_verify_arg_class_kind(const zend_arg_info *cur_arg_info)
  {
  	return zend_fetch_class(cur_arg_info->class_name, (ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD));
  }
  
  static ZEND_COLD void zend_verify_arg_error(const zend_function *zf, uint32_t arg_num, const char *need_msg, const char *need_kind, const char *given_msg, const char *given_kind, zval *arg)
  {
  	zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data;
  	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 = "";
  	}
  
  	if (zf->common.type == ZEND_USER_FUNCTION) {
  		if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
  			zend_type_error("Argument %d passed to %s%s%s() must %s%s, %s%s given, called in %s on line %d",
  					arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind,
  					ZSTR_VAL(ptr->func->op_array.filename), ptr->opline->lineno);
  		} else {
  			zend_type_error("Argument %d passed to %s%s%s() must %s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind);
  		}
  	} else {
  		zend_type_error("Argument %d passed to %s%s%s() must %s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind);
  	}
  }
  
  static int is_null_constant(zval *default_value)
  {
  	if (Z_CONSTANT_P(default_value)) {
  		zval constant;
  
  		ZVAL_COPY_VALUE(&constant, default_value);
  		if (UNEXPECTED(zval_update_constant_ex(&constant, 0, NULL) != SUCCESS)) {
  			return 0;
  		}
  		if (Z_TYPE(constant) == IS_NULL) {
  			return 1;
  		}
  		zval_dtor(&constant);
  	}
  	return 0;
  }
  
  static zend_bool zend_verify_weak_scalar_type_hint(zend_uchar type_hint, zval *arg)
  {
  	switch (type_hint) {
  		case _IS_BOOL: {
  			zend_bool dest;
  
  			if (!zend_parse_arg_bool_weak(arg, &dest)) {
  				return 0;
  			}
  			zval_ptr_dtor(arg);
  			ZVAL_BOOL(arg, dest);
  			return 1;
  		}
  		case IS_LONG: {
  			zend_long dest;
  
  			if (!zend_parse_arg_long_weak(arg, &dest)) {
  				return 0;
  			}
  			zval_ptr_dtor(arg);
  			ZVAL_LONG(arg, dest);
  			return 1;
  		}
  		case IS_DOUBLE: {
  			double dest;
  
  			if (!zend_parse_arg_double_weak(arg, &dest)) {
  				return 0;
  			}
  			zval_ptr_dtor(arg);
  			ZVAL_DOUBLE(arg, dest);
  			return 1;
  		}
  		case IS_STRING: {
  			zend_string *dest;
  
  			/* on success "arg" is converted to IS_STRING */
  			if (!zend_parse_arg_str_weak(arg, &dest)) {
  				return 0;
  			}
  			return 1;
  		}
  		default:
  			return 0;
  	}
  }
  
  static zend_bool zend_verify_scalar_type_hint(zend_uchar type_hint, zval *arg, zend_bool strict)
  {
  	if (UNEXPECTED(strict)) {
  		/* SSTH Exception: IS_LONG may be accepted as IS_DOUBLE (converted) */
  		if (type_hint != IS_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) */
  		return 0;
  	}
  	return zend_verify_weak_scalar_type_hint(type_hint, arg);
  }
  
  static int zend_verify_internal_arg_type(zend_function *zf, uint32_t arg_num, zval *arg)
  {
  	zend_internal_arg_info *cur_arg_info;
  	char *need_msg, *class_name;
  	zend_class_entry *ce;
  
  	if (EXPECTED(arg_num <= zf->internal_function.num_args)) {
  		cur_arg_info = &zf->internal_function.arg_info[arg_num-1];
  	} else if (zf->internal_function.fn_flags & ZEND_ACC_VARIADIC) {
  		cur_arg_info = &zf->internal_function.arg_info[zf->internal_function.num_args];
  	} else {
  		return 1;
  	}
  
  	if (cur_arg_info->type_hint) {
  		ZVAL_DEREF(arg);
  		if (EXPECTED(cur_arg_info->type_hint == Z_TYPE_P(arg))) {
  			if (cur_arg_info->class_name) {
  				need_msg = zend_verify_internal_arg_class_kind((zend_internal_arg_info*)cur_arg_info, &class_name, &ce);
  				if (!ce || !instanceof_function(Z_OBJCE_P(arg), ce)) {
  					zend_verify_arg_error(zf, arg_num, need_msg, class_name, "instance of ", ZSTR_VAL(Z_OBJCE_P(arg)->name), arg);
  					return 0;
  				}
  			}
  		} else if (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null) {
  			if (cur_arg_info->class_name) {
  				need_msg = zend_verify_internal_arg_class_kind((zend_internal_arg_info*)cur_arg_info, &class_name, &ce);
  				zend_verify_arg_error(zf, arg_num, need_msg, class_name, zend_zval_type_name(arg), "", arg);
  				return 0;
  			} else if (cur_arg_info->type_hint == IS_CALLABLE) {
  				if (!zend_is_callable(arg, IS_CALLABLE_CHECK_SILENT, NULL)) {
  					zend_verify_arg_error(zf, arg_num, "be callable", "", zend_zval_type_name(arg), "", arg);
  					return 0;
  				}
  			} else if (cur_arg_info->type_hint == _IS_BOOL &&
  			           EXPECTED(Z_TYPE_P(arg) == IS_FALSE || Z_TYPE_P(arg) == IS_TRUE)) {
  				/* pass */
  			} else if (UNEXPECTED(!zend_verify_scalar_type_hint(cur_arg_info->type_hint, arg, ZEND_CALL_USES_STRICT_TYPES(EG(current_execute_data))))) {
  				zend_verify_arg_error(zf, arg_num, "be of the type ", zend_get_type_by_const(cur_arg_info->type_hint), zend_zval_type_name(arg), "", arg);
  				return 0;
  			}
  		}
  	}
  	return 1;
  }
  
  static zend_always_inline int zend_verify_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, zval *default_value, void **cache_slot)
  {
  	zend_arg_info *cur_arg_info;
  	char *need_msg;
  	zend_class_entry *ce;
  
  	if (EXPECTED(arg_num <= zf->common.num_args)) {
  		cur_arg_info = &zf->common.arg_info[arg_num-1];
  	} else if (UNEXPECTED(zf->common.fn_flags & ZEND_ACC_VARIADIC)) {
  		cur_arg_info = &zf->common.arg_info[zf->common.num_args];
  	} else {
  		return 1;
  	}
  
  	if (cur_arg_info->type_hint) {
  		ZVAL_DEREF(arg);
  		if (EXPECTED(cur_arg_info->type_hint == Z_TYPE_P(arg))) {
  			if (cur_arg_info->class_name) {
  				if (EXPECTED(*cache_slot)) {
  					ce = (zend_class_entry*)*cache_slot;
  				} else {
  					ce = zend_verify_arg_class_kind(cur_arg_info);
  					if (UNEXPECTED(!ce)) {
  						zend_verify_arg_error(zf, arg_num, "be an instance of ", ZSTR_VAL(cur_arg_info->class_name), "instance of ", ZSTR_VAL(Z_OBJCE_P(arg)->name), arg);
  						return 0;
  					}
  					*cache_slot = (void*)ce;
  				}
  				if (UNEXPECTED(!instanceof_function(Z_OBJCE_P(arg), ce))) {
  					need_msg =
  						(ce->ce_flags & ZEND_ACC_INTERFACE) ?
  						"implement interface " : "be an instance of ";
  					zend_verify_arg_error(zf, arg_num, need_msg, ZSTR_VAL(ce->name), "instance of ", ZSTR_VAL(Z_OBJCE_P(arg)->name), arg);
  					return 0;
  				}
  			}
  		} else if (Z_TYPE_P(arg) != IS_NULL || !(cur_arg_info->allow_null || (default_value && is_null_constant(default_value)))) {
  			if (cur_arg_info->class_name) {
  				if (EXPECTED(*cache_slot)) {
  					ce = (zend_class_entry*)*cache_slot;
  				} else {
  					ce = zend_verify_arg_class_kind(cur_arg_info);
  					if (UNEXPECTED(!ce)) {
  						if (Z_TYPE_P(arg) == IS_OBJECT) {
  							zend_verify_arg_error(zf, arg_num, "be an instance of ", ZSTR_VAL(cur_arg_info->class_name), "instance of ", ZSTR_VAL(Z_OBJCE_P(arg)->name), arg);
  						} else {
  							zend_verify_arg_error(zf, arg_num, "be an instance of ", ZSTR_VAL(cur_arg_info->class_name), "", zend_zval_type_name(arg), arg);
  						}
  						return 0;
  					}
  					*cache_slot = (void*)ce;
  				}
  				need_msg =
  					(ce->ce_flags & ZEND_ACC_INTERFACE) ?
  					"implement interface " : "be an instance of ";
  				zend_verify_arg_error(zf, arg_num, need_msg, ZSTR_VAL(ce->name), zend_zval_type_name(arg), "", arg);
  				return 0;
  			} else if (cur_arg_info->type_hint == IS_CALLABLE) {
  				if (!zend_is_callable(arg, IS_CALLABLE_CHECK_SILENT, NULL)) {
  					zend_verify_arg_error(zf, arg_num, "be callable", "", zend_zval_type_name(arg), "", arg);
  					return 0;
  				}
  			} else if (cur_arg_info->type_hint == _IS_BOOL &&
  			           EXPECTED(Z_TYPE_P(arg) == IS_FALSE || Z_TYPE_P(arg) == IS_TRUE)) {
  				/* pass */
  			} else if (UNEXPECTED(!zend_verify_scalar_type_hint(cur_arg_info->type_hint, arg, ZEND_ARG_USES_STRICT_TYPES()))) {
  				zend_verify_arg_error(zf, arg_num, "be of the type ", zend_get_type_by_const(cur_arg_info->type_hint), zend_zval_type_name(arg), "", arg);
  				return 0;
  			}
  		}
  	}
  	return 1;
  }
  
  static zend_always_inline int zend_verify_missing_arg_type(zend_function *zf, uint32_t arg_num, void **cache_slot)
  {
  	zend_arg_info *cur_arg_info;
  	char *need_msg;
  	zend_class_entry *ce;
  
  	if (EXPECTED(arg_num <= zf->common.num_args)) {
  		cur_arg_info = &zf->common.arg_info[arg_num-1];
  	} else if (UNEXPECTED(zf->common.fn_flags & ZEND_ACC_VARIADIC)) {
  		cur_arg_info = &zf->common.arg_info[zf->common.num_args];
  	} else {
  		return 1;
  	}
  
  	if (cur_arg_info->type_hint) {
  		if (cur_arg_info->class_name) {
  			if (EXPECTED(*cache_slot)) {
  				ce = (zend_class_entry*)*cache_slot;
  			} else {
  				ce = zend_verify_arg_class_kind(cur_arg_info);
  				if (UNEXPECTED(!ce)) {
  					zend_verify_arg_error(zf, arg_num, "be an instance of ", ZSTR_VAL(cur_arg_info->class_name), "none", "", NULL);
  					return 0;
  				}
  				*cache_slot = (void*)ce;
  			}
  			need_msg =
  				(ce->ce_flags & ZEND_ACC_INTERFACE) ?
  				"implement interface " : "be an instance of ";
  			zend_verify_arg_error(zf, arg_num, need_msg, ZSTR_VAL(ce->name), "none", "", NULL);
  		} else if (cur_arg_info->type_hint == IS_CALLABLE) {
  			zend_verify_arg_error(zf, arg_num, "be callable", "", "none", "", NULL);
  		} else {
  			zend_verify_arg_error(zf, arg_num, "be of the type ", zend_get_type_by_const(cur_arg_info->type_hint), "none", "", NULL);
  		}
  		return 0;
  	}
  	return 1;
  }
  
  static ZEND_COLD void zend_verify_missing_arg(zend_execute_data *execute_data, uint32_t arg_num, void **cache_slot)
  {
  	if (EXPECTED(!(EX(func)->common.fn_flags & ZEND_ACC_HAS_TYPE_HINTS)) ||
  	    UNEXPECTED(zend_verify_missing_arg_type(EX(func), arg_num, cache_slot))) {
  		const char *class_name = EX(func)->common.scope ? ZSTR_VAL(EX(func)->common.scope->name) : "";
  		const char *space = EX(func)->common.scope ? "::" : "";
  		const char *func_name = EX(func)->common.function_name ? ZSTR_VAL(EX(func)->common.function_name) : "main";
  		zend_execute_data *ptr = EX(prev_execute_data);
  
  		if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
  			zend_error(E_WARNING, "Missing argument %u for %s%s%s(), called in %s on line %d and defined", arg_num, class_name, space, func_name, ZSTR_VAL(ptr->func->op_array.filename), ptr->opline->lineno);
  		} else {
  			zend_error(E_WARNING, "Missing argument %u for %s%s%s()", arg_num, class_name, space, func_name);
  		}
  	}
  }
  
  static ZEND_COLD void zend_verify_return_error(const zend_function *zf, const char *need_msg, const char *need_kind, 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("Return value of %s%s%s() must %s%s, %s%s returned",
  		fclass, fsep, fname, need_msg, need_kind, returned_msg, returned_kind);
  }
  
  static ZEND_COLD void zend_verify_internal_return_error(const zend_function *zf, const char *need_msg, const char *need_kind, 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_error_noreturn(E_CORE_ERROR, "Return value of %s%s%s() must %s%s, %s%s returned",
  		fclass, fsep, fname, need_msg, need_kind, returned_msg, returned_kind);
  }
  
  #if ZEND_DEBUG
  static int zend_verify_internal_return_type(zend_function *zf, zval *ret)
  {
  	zend_arg_info *ret_info = zf->common.arg_info - 1;
  	char *need_msg, *class_name;
  	zend_class_entry *ce;
  
  
  	if (ret_info->type_hint) {
  		if (EXPECTED(ret_info->type_hint == Z_TYPE_P(ret))) {
  			if (ret_info->class_name) {
  				need_msg = zend_verify_internal_arg_class_kind((zend_internal_arg_info *)ret_info, &class_name, &ce);
  				if (!ce || !instanceof_function(Z_OBJCE_P(ret), ce)) {
  					zend_verify_internal_return_error(zf, need_msg, class_name, "instance of ", ZSTR_VAL(Z_OBJCE_P(ret)->name));
  					return 0;
  				}
  			}
  		} else if (Z_TYPE_P(ret) != IS_NULL || !ret_info->allow_null) {
  			if (ret_info->class_name) {
  				need_msg = zend_verify_internal_arg_class_kind((zend_internal_arg_info *)ret_info, &class_name, &ce);
  				zend_verify_internal_return_error(zf, need_msg, class_name, zend_zval_type_name(ret), "");
  			} else if (ret_info->type_hint == IS_CALLABLE) {
  				if (!zend_is_callable(ret, IS_CALLABLE_CHECK_SILENT, NULL) && (Z_TYPE_P(ret) != IS_NULL || !ret_info->allow_null)) {
  					zend_verify_internal_return_error(zf, "be callable", "", zend_zval_type_name(ret), "");
  					return 0;
  				}
  			} else if (ret_info->type_hint == _IS_BOOL &&
  			           EXPECTED(Z_TYPE_P(ret) == IS_FALSE || Z_TYPE_P(ret) == IS_TRUE)) {
  				/* pass */
  			} else {
  				/* Use strict check to verify return value of internal function */
  				zend_verify_internal_return_error(zf, "be of the type ", zend_get_type_by_const(ret_info->type_hint), zend_zval_type_name(ret), "");
  				return 0;
  			}
  		}
  	}
  	return 1;
  }
  #endif
  
  static zend_always_inline void zend_verify_return_type(zend_function *zf, zval *ret, void **cache_slot)
  {
  	zend_arg_info *ret_info = zf->common.arg_info - 1;
  	char *need_msg;
  	zend_class_entry *ce;
  
  	if (ret_info->type_hint) {
  		if (EXPECTED(ret_info->type_hint == Z_TYPE_P(ret))) {
  			if (ret_info->class_name) {
  				if (EXPECTED(*cache_slot)) {
  					ce = (zend_class_entry*)*cache_slot;
  				} else {
  					ce = zend_verify_arg_class_kind(ret_info);
  					if (UNEXPECTED(!ce)) {
  						zend_verify_return_error(zf, "be an instance of ", ZSTR_VAL(ret_info->class_name), "instance of ", ZSTR_VAL(Z_OBJCE_P(ret)->name));
  						return;
  					}
  					*cache_slot = (void*)ce;
  				}
  				if (UNEXPECTED(!instanceof_function(Z_OBJCE_P(ret), ce))) {
  					need_msg =
  						(ce->ce_flags & ZEND_ACC_INTERFACE) ?
  						"implement interface " : "be an instance of ";
  					zend_verify_return_error(zf, need_msg, ZSTR_VAL(ce->name), "instance of ", ZSTR_VAL(Z_OBJCE_P(ret)->name));
  				}
  			}
  		} else if (Z_TYPE_P(ret) != IS_NULL || !ret_info->allow_null) {
  			if (ret_info->class_name) {
  				if (EXPECTED(*cache_slot)) {
  					ce = (zend_class_entry*)*cache_slot;
  				} else {
  					ce = zend_verify_arg_class_kind(ret_info);
  					if (UNEXPECTED(!ce)) {
  						zend_verify_return_error(zf, "be an instance of ", ZSTR_VAL(ret_info->class_name), zend_zval_type_name(ret), "");
  						return;
  					}
  					*cache_slot = (void*)ce;
  				}
  				need_msg =
  					(ce->ce_flags & ZEND_ACC_INTERFACE) ?
  					"implement interface " : "be an instance of ";
  				zend_verify_return_error(zf, need_msg, ZSTR_VAL(ce->name), zend_zval_type_name(ret), "");
  			} else if (ret_info->type_hint == IS_CALLABLE) {
  				if (!zend_is_callable(ret, IS_CALLABLE_CHECK_SILENT, NULL)) {
  					zend_verify_return_error(zf, "be callable", "", zend_zval_type_name(ret), "");
  				}
  			} else if (ret_info->type_hint == _IS_BOOL &&
  			           EXPECTED(Z_TYPE_P(ret) == IS_FALSE || Z_TYPE_P(ret) == IS_TRUE)) {
  				/* pass */
  			} else if (UNEXPECTED(!zend_verify_scalar_type_hint(ret_info->type_hint, ret, ZEND_RET_USES_STRICT_TYPES()))) {
  				zend_verify_return_error(zf, "be of the type ", zend_get_type_by_const(ret_info->type_hint), zend_zval_type_name(ret), "");
  			}
  		}
  	}
  }
  
  static ZEND_COLD int zend_verify_missing_return_type(zend_function *zf, void **cache_slot)
  {
  	zend_arg_info *ret_info = zf->common.arg_info - 1;
  	char *need_msg;
  	zend_class_entry *ce;
  
  	if (ret_info->type_hint) {
  		if (ret_info->class_name) {
  			if (EXPECTED(*cache_slot)) {
  				ce = (zend_class_entry*)*cache_slot;
  			} else {
  				ce = zend_verify_arg_class_kind(ret_info);
  				if (UNEXPECTED(!ce)) {
  					zend_verify_return_error(zf, "be an instance of ", ZSTR_VAL(ret_info->class_name), "none", "");
  					return 0;
  				}
  				*cache_slot = (void*)ce;
  			}
  			need_msg =
  				(ce->ce_flags & ZEND_ACC_INTERFACE) ?
  				"implement interface " : "be an instance of ";
  			zend_verify_return_error(zf, need_msg, ZSTR_VAL(ce->name), "none", "");
  			return 0;
  		} else if (ret_info->type_hint == IS_CALLABLE) {
  			zend_verify_return_error(zf, "be callable", "", "none", "");
  		} else {
  			zend_verify_return_error(zf, "be of the type ", zend_get_type_by_const(ret_info->type_hint), "none", "");
  		}
  		return 0;
  	}
  	return 1;
  }
  
  static zend_always_inline void zend_assign_to_object(zval *retval, zval *object, uint32_t object_op_type, zval *property_name, uint32_t property_op_type, int value_type, znode_op value_op, const zend_execute_data *execute_data, void **cache_slot)
  {
  	zend_free_op free_value;
  	zval *value = get_zval_ptr_r(value_type, value_op, execute_data, &free_value);
   	zval tmp;
  
  	if (object_op_type != IS_UNUSED && UNEXPECTED(Z_TYPE_P(object) != IS_OBJECT)) {
  		do {
  			if (object_op_type == IS_VAR && UNEXPECTED(object == &EG(error_zval))) {
  				if (retval) {
   					ZVAL_NULL(retval);
  				}
  				FREE_OP(free_value);
  				return;
  			}
  			if (Z_ISREF_P(object)) {
  				object = Z_REFVAL_P(object);
  				if (EXPECTED(Z_TYPE_P(object) == IS_OBJECT)) {
  					break;
  				}
  			}
  			if (EXPECTED(Z_TYPE_P(object) <= IS_FALSE ||
  		    	(Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0))) {
  				zend_object *obj;
  
  				zval_ptr_dtor(object);
  				object_init(object);
  				Z_ADDREF_P(object);
  				obj = Z_OBJ_P(object);
  				zend_error(E_WARNING, "Creating default object from empty value");
  				if (GC_REFCOUNT(obj) == 1) {
  					/* the enclosing container was deleted, obj is unreferenced */
  					if (retval) {
  						ZVAL_NULL(retval);
  					}
  					FREE_OP(free_value);
  					OBJ_RELEASE(obj);
  					return;
  				}
  				Z_DELREF_P(object);
  			} else {
  				zend_error(E_WARNING, "Attempt to assign property of non-object");
  				if (retval) {
  					ZVAL_NULL(retval);
  				}
  				FREE_OP(free_value);
  				return;
  			}
  		} while (0);
  	}
  
  	if (property_op_type == IS_CONST &&
  		EXPECTED(Z_OBJCE_P(object) == CACHED_PTR_EX(cache_slot))) {
  		uint32_t prop_offset = (uint32_t)(intptr_t)CACHED_PTR_EX(cache_slot + 1);
  		zend_object *zobj = Z_OBJ_P(object);
  		zval *property;
  
  		if (EXPECTED(prop_offset != (uint32_t)ZEND_DYNAMIC_PROPERTY_OFFSET)) {
  			property = OBJ_PROP(zobj, prop_offset);
  			if (Z_TYPE_P(property) != IS_UNDEF) {
  fast_assign:
  				value = zend_assign_to_variable(property, value, value_type);
  				if (retval && EXPECTED(!EG(exception))) {
  					ZVAL_COPY(retval, value);
  				}
  				return;
  			}
  		} else {
  			if (EXPECTED(zobj->properties != NULL)) {
  				if (UNEXPECTED(GC_REFCOUNT(zobj->properties) > 1)) {
  					if (EXPECTED(!(GC_FLAGS(zobj->properties) & IS_ARRAY_IMMUTABLE))) {
  						GC_REFCOUNT(zobj->properties)--;
  					}
  					zobj->properties = zend_array_dup(zobj->properties);
  				}
  				property = zend_hash_find(zobj->properties, Z_STR_P(property_name));
  				if (property) {
  					goto fast_assign;
  				}
  			}
  
  			if (!zobj->ce->__set) {
  
  				if (EXPECTED(zobj->properties == NULL)) {
  					rebuild_object_properties(zobj);
  				}
  				/* separate our value if necessary */
  				if (value_type == IS_CONST) {
  					if (UNEXPECTED(Z_OPT_COPYABLE_P(value))) {
  						ZVAL_COPY_VALUE(&tmp, value);
  						zval_copy_ctor_func(&tmp);
  						value = &tmp;
  					}
  				} else if (value_type != IS_TMP_VAR) {
  					if (Z_ISREF_P(value)) {
  						if (value_type == IS_VAR) {
  							zend_reference *ref = Z_REF_P(value);
  							if (--(GC_REFCOUNT(ref)) == 0) {
  								ZVAL_COPY_VALUE(&tmp, Z_REFVAL_P(value));
  								efree_size(ref, sizeof(zend_reference));
  								value = &tmp;
  							} else {
  								value = Z_REFVAL_P(value);
  								if (Z_REFCOUNTED_P(value)) {
  									Z_ADDREF_P(value);
  								}
  							}
  						} else {
  							value = Z_REFVAL_P(value);
  							if (Z_REFCOUNTED_P(value)) {
  								Z_ADDREF_P(value);
  							}
  						}
  					} else if (value_type == IS_CV && Z_REFCOUNTED_P(value)) {
  						Z_ADDREF_P(value);
  					}
  				}
  				zend_hash_add_new(zobj->properties, Z_STR_P(property_name), value);
  				if (retval) {
  					ZVAL_COPY(retval, value);
  				}
  				return;
  			}
      	}
  	}
  
  	if (!Z_OBJ_HT_P(object)->write_property) {
  		zend_error(E_WARNING, "Attempt to assign property of non-object");
  		if (retval) {
  			ZVAL_NULL(retval);
  		}
  		FREE_OP(free_value);
  		return;
  	}
  
  	/* separate our value if necessary */
  	if (value_type == IS_CONST) {
  		if (UNEXPECTED(Z_OPT_COPYABLE_P(value))) {
  			ZVAL_COPY_VALUE(&tmp, value);
  			zval_copy_ctor_func(&tmp);
  			value = &tmp;
  		}
  	} else if (value_type != IS_TMP_VAR) {
  		ZVAL_DEREF(value);
  	}
  
  	Z_OBJ_HT_P(object)->write_property(object, property_name, value, cache_slot);
  
  	if (retval && EXPECTED(!EG(exception))) {
  		ZVAL_COPY(retval, value);
  	}
  	if (value_type == IS_CONST) {
  		zval_ptr_dtor_nogc(value);
  	} else {
  		FREE_OP(free_value);
  	}
  }
  
  static zend_never_inline void zend_assign_to_object_dim(zval *retval, zval *object, zval *property_name, int value_type, znode_op value_op, const zend_execute_data *execute_data)
  {
  	zend_free_op free_value;
   	zval *value = get_zval_ptr_deref(value_type, value_op, execute_data, &free_value, BP_VAR_R);
   	zval tmp;
  
  	/* Note:  property_name in this case is really the array index! */
  	if (!Z_OBJ_HT_P(object)->write_dimension) {
  		zend_throw_error(NULL, "Cannot use object as array");
  		FREE_OP(free_value);
  		return;
  	}
  
  	/* separate our value if necessary */
  	if (value_type == IS_CONST) {
  		if (UNEXPECTED(Z_OPT_COPYABLE_P(value))) {
  			ZVAL_COPY_VALUE(&tmp, value);
  			zval_copy_ctor_func(&tmp);
  			value = &tmp;
  		}
  	}
  
  	Z_OBJ_HT_P(object)->write_dimension(object, property_name, value);
  
  	if (retval && EXPECTED(!EG(exception))) {
  		ZVAL_COPY(retval, value);
  	}
  	if (value_type == IS_CONST) {
  		zval_ptr_dtor_nogc(value);
  	} else {
  		FREE_OP(free_value);
  	}
  }
  
  static zend_never_inline void zend_binary_assign_op_obj_dim(zval *object, zval *property, zval *value, zval *retval, binary_op_type binary_op)
  {
  	zval *z;
  	zval rv, res;
  
  	if (Z_OBJ_HT_P(object)->read_dimension &&
  		(z = Z_OBJ_HT_P(object)->read_dimension(object, property, BP_VAR_R, &rv)) != NULL) {
  
  		if (Z_TYPE_P(z) == IS_OBJECT && Z_OBJ_HT_P(z)->get) {
  			zval rv2;
  			zval *value = Z_OBJ_HT_P(z)->get(z, &rv2);
  
  			if (z == &rv) {
  				zval_ptr_dtor(&rv);
  			}
  			ZVAL_COPY_VALUE(z, value);
  		}
  		binary_op(&res, Z_ISREF_P(z) ? Z_REFVAL_P(z) : z, value);
  		Z_OBJ_HT_P(object)->write_dimension(object, property, &res);
  		if (z == &rv) {
  			zval_ptr_dtor(&rv);
  		}
  		if (retval) {
  			ZVAL_COPY(retval, &res);
  		}
  		zval_ptr_dtor(&res);
  	} else {
  		zend_error(E_WARNING, "Attempt to assign property of non-object");
  		if (retval) {
  			ZVAL_NULL(retval);
  		}
  	}
  }
  
  static void zend_assign_to_string_offset(zval *str, zend_long offset, zval *value, zval *result)
  {
  	zend_string *old_str;
  
  	if (offset < 0) {
  		zend_error(E_WARNING, "Illegal string offset:  " ZEND_LONG_FMT, offset);
  		zend_string_release(Z_STR_P(str));
  		if (result) {
  			ZVAL_NULL(result);
  		}
  		return;
  	}
  
  	old_str = Z_STR_P(str);
  	if ((size_t)offset >= Z_STRLEN_P(str)) {
  		zend_long old_len = Z_STRLEN_P(str);
  		Z_STR_P(str) = zend_string_extend(Z_STR_P(str), offset + 1, 0);
  		Z_TYPE_INFO_P(str) = IS_STRING_EX;
  		memset(Z_STRVAL_P(str) + old_len, ' ', offset - old_len);
  		Z_STRVAL_P(str)[offset+1] = 0;
  	} else if (!Z_REFCOUNTED_P(str)) {
  		Z_STR_P(str) = zend_string_init(Z_STRVAL_P(str), Z_STRLEN_P(str), 0);
  		Z_TYPE_INFO_P(str) = IS_STRING_EX;
  	}
  
  	if (Z_TYPE_P(value) != IS_STRING) {
  		zend_string *tmp = zval_get_string(value);
  
  		Z_STRVAL_P(str)[offset] = ZSTR_VAL(tmp)[0];
  		zend_string_release(tmp);
  	} else {
  		Z_STRVAL_P(str)[offset] = Z_STRVAL_P(value)[0];
  	}
  	/*
  	 * the value of an assignment to a string offset is undefined
  	T(result->u.var).var = &T->str_offset.str;
  	*/
  
  	zend_string_release(old_str);
  	if (result) {
  		zend_uchar c = (zend_uchar)Z_STRVAL_P(str)[offset];
  
  		if (CG(one_char_string)[c]) {
  			ZVAL_INTERNED_STR(result, CG(one_char_string)[c]);
  		} else {
  			ZVAL_NEW_STR(result, zend_string_init(Z_STRVAL_P(str) + offset, 1, 0));
  		}
  	}
  }
  
  static zend_never_inline void zend_post_incdec_overloaded_property(zval *object, zval *property, void **cache_slot, int inc, zval *result)
  {
  	if (Z_OBJ_HT_P(object)->read_property && Z_OBJ_HT_P(object)->write_property) {
  		zval rv, obj;
  		zval *z;
  		zval z_copy;
  
  		ZVAL_OBJ(&obj, Z_OBJ_P(object));
  		Z_ADDREF(obj);
  		z = Z_OBJ_HT(obj)->read_property(&obj, property, BP_VAR_R, cache_slot, &rv);
  		if (UNEXPECTED(EG(exception))) {
  			OBJ_RELEASE(Z_OBJ(obj));
  			return;
  		}
  
  		if (UNEXPECTED(Z_TYPE_P(z) == IS_OBJECT) && Z_OBJ_HT_P(z)->get) {
  			zval rv2;
  			zval *value = Z_OBJ_HT_P(z)->get(z, &rv2);
  			if (z == &rv) {
  				zval_ptr_dtor(&rv);
  			}
  			ZVAL_COPY_VALUE(z, value);
  		}
  
  		if (UNEXPECTED(Z_TYPE_P(z) == IS_REFERENCE)) {
  			ZVAL_COPY(result, Z_REFVAL_P(z));
  		} else {
  			ZVAL_COPY(result, z);
  		}
  		ZVAL_DUP(&z_copy, result);
  		if (inc) {
  			increment_function(&z_copy);
  		} else {
  			decrement_function(&z_copy);
  		}
  		Z_OBJ_HT(obj)->write_property(&obj, property, &z_copy, cache_slot);
  		OBJ_RELEASE(Z_OBJ(obj));
  		zval_ptr_dtor(&z_copy);
  		zval_ptr_dtor(z);
  	} else {
  		zend_error(E_WARNING, "Attempt to increment/decrement property of non-object");
  		ZVAL_NULL(result);
  	}
  }
  
  static zend_never_inline void zend_pre_incdec_overloaded_property(zval *object, zval *property, void **cache_slot, int inc, zval *result)
  {
  	zval rv;
  
  	if (Z_OBJ_HT_P(object)->read_property && Z_OBJ_HT_P(object)->write_property) {
  		zval *z, obj;
  				
  		ZVAL_OBJ(&obj, Z_OBJ_P(object));
  		Z_ADDREF(obj);
  		z = Z_OBJ_HT(obj)->read_property(&obj, property, BP_VAR_R, cache_slot, &rv);
  		if (UNEXPECTED(EG(exception))) {
  			OBJ_RELEASE(Z_OBJ(obj));
  			return;
  		}
  
  		if (UNEXPECTED(Z_TYPE_P(z) == IS_OBJECT) && Z_OBJ_HT_P(z)->get) {
  			zval rv2;
  			zval *value = Z_OBJ_HT_P(z)->get(z, &rv2);
  
  			if (z == &rv) {
  				zval_ptr_dtor(&rv);
  			}
  			ZVAL_COPY_VALUE(z, value);
  		}
  		ZVAL_DEREF(z);
  		SEPARATE_ZVAL_NOREF(z);
  		if (inc) {
  			increment_function(z);
  		} else {
  			decrement_function(z);
  		}
  		if (UNEXPECTED(result)) {
  			ZVAL_COPY(result, z);
  		}
  		Z_OBJ_HT(obj)->write_property(&obj, property, z, cache_slot);
  		OBJ_RELEASE(Z_OBJ(obj));
  		zval_ptr_dtor(z);
  	} else {
  		zend_error(E_WARNING, "Attempt to increment/decrement property of non-object");
  		if (UNEXPECTED(result)) {
  			ZVAL_NULL(result);
  		}
  	}
  }
  
  static zend_never_inline void zend_assign_op_overloaded_property(zval *object, zval *property, void **cache_slot, zval *value, binary_op_type binary_op, zval *result)
  {
  	zval *z;
  	zval rv, obj;
  	zval *zptr;
  
  	ZVAL_OBJ(&obj, Z_OBJ_P(object));
  	Z_ADDREF(obj);
  	if (EXPECTED(Z_OBJ_HT(obj)->read_property)) {
  		z = Z_OBJ_HT(obj)->read_property(&obj, property, BP_VAR_R, cache_slot, &rv);
  		if (UNEXPECTED(EG(exception))) {
  			OBJ_RELEASE(Z_OBJ(obj));
  			return;
  		}
  		if (Z_TYPE_P(z) == IS_OBJECT && Z_OBJ_HT_P(z)->get) {
  			zval rv2;
  			zval *value = Z_OBJ_HT_P(z)->get(z, &rv2);
  
  			if (z == &rv) {
  				zval_ptr_dtor(&rv);
  			}
  			ZVAL_COPY_VALUE(z, value);
  		}
  		zptr = z;
  		ZVAL_DEREF(z);
  		SEPARATE_ZVAL_NOREF(z);
  		binary_op(z, z, value);
  		Z_OBJ_HT(obj)->write_property(&obj, property, z, cache_slot);
  		if (UNEXPECTED(result)) {
  			ZVAL_COPY(result, z);
  		}
  		zval_ptr_dtor(zptr);
  	} else {
  		zend_error(E_WARNING, "Attempt to assign property of non-object");
  		if (UNEXPECTED(result)) {
  			ZVAL_NULL(result);
  		}
  	}
  	OBJ_RELEASE(Z_OBJ(obj));
  }
  
  /* Utility Functions for Extensions */
  static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array)
  {
  	if (extension->statement_handler) {
  		extension->statement_handler(op_array);
  	}
  }
  
  
  static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array)
  {
  	if (extension->fcall_begin_handler) {
  		extension->fcall_begin_handler(op_array);
  	}
  }
  
  
  static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array)
  {
  	if (extension->fcall_end_handler) {
  		extension->fcall_end_handler(op_array);
  	}
  }
  
  
  static zend_always_inline HashTable *zend_get_target_symbol_table(zend_execute_data *execute_data, int fetch_type)
  {
  	HashTable *ht;
  
  	if (EXPECTED(fetch_type == ZEND_FETCH_GLOBAL_LOCK) ||
  	    EXPECTED(fetch_type == ZEND_FETCH_GLOBAL)) {
  		ht = &EG(symbol_table);
  	} else if (EXPECTED(fetch_type == ZEND_FETCH_STATIC)) {
  		ZEND_ASSERT(EX(func)->op_array.static_variables != NULL);
  		ht = EX(func)->op_array.static_variables;
  		if (GC_REFCOUNT(ht) > 1) {
  			if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
  				GC_REFCOUNT(ht)--;
  			}
  			EX(func)->op_array.static_variables = ht = zend_array_dup(ht);
  		}
  	} else {
  		ZEND_ASSERT(fetch_type == ZEND_FETCH_LOCAL);
  		if (!EX(symbol_table)) {
  			zend_rebuild_symbol_table();
  		}
  		ht = EX(symbol_table);
  	}
  	return ht;
  }
  
  static zend_always_inline zval *zend_fetch_dimension_address_inner(HashTable *ht, const zval *dim, int dim_type, int type)
  {
  	zval *retval;
  	zend_string *offset_key;
  	zend_ulong hval;
  
  try_again:
  	if (EXPECTED(Z_TYPE_P(dim) == IS_LONG)) {
  		hval = Z_LVAL_P(dim);
  num_index:
  		retval = zend_hash_index_find(ht, hval);
  		if (retval == NULL) {
  			switch (type) {
  				case BP_VAR_R:
  					zend_error(E_NOTICE,"Undefined offset: " ZEND_LONG_FMT, hval);
  					/* break missing intentionally */
  				case BP_VAR_UNSET:
  				case BP_VAR_IS:
  					retval = &EG(uninitialized_zval);
  					break;
  				case BP_VAR_RW:
  					zend_error(E_NOTICE,"Undefined offset: " ZEND_LONG_FMT, hval);
  					retval = zend_hash_index_update(ht, hval, &EG(uninitialized_zval));
  					break;
  				case BP_VAR_W:
  					retval = zend_hash_index_add_new(ht, hval, &EG(uninitialized_zval));
  					break;
  			}
  		}
  	} else if (EXPECTED(Z_TYPE_P(dim) == IS_STRING)) {
  		offset_key = Z_STR_P(dim);
  		if (dim_type != IS_CONST) {
  			if (ZEND_HANDLE_NUMERIC(offset_key, hval)) {
  				goto num_index;
  			}
  		}
  str_index:
  		retval = zend_hash_find(ht, offset_key);
  		if (retval) {
  			/* support for $GLOBALS[...] */
  			if (UNEXPECTED(Z_TYPE_P(retval) == IS_INDIRECT)) {
  				retval = Z_INDIRECT_P(retval);
  				if (UNEXPECTED(Z_TYPE_P(retval) == IS_UNDEF)) {
  					switch (type) {
  						case BP_VAR_R:
  							zend_error(E_NOTICE, "Undefined index: %s", ZSTR_VAL(offset_key));
  							/* break missing intentionally */
  						case BP_VAR_UNSET:
  						case BP_VAR_IS:
  							retval = &EG(uninitialized_zval);
  							break;
  						case BP_VAR_RW:
  							zend_error(E_NOTICE,"Undefined index: %s", ZSTR_VAL(offset_key));
  							/* break missing intentionally */
  						case BP_VAR_W:
  							ZVAL_NULL(retval);
  							break;
  					}
  				}
  			}
  		} else {
  			switch (type) {
  				case BP_VAR_R:
  					zend_error(E_NOTICE, "Undefined index: %s", ZSTR_VAL(offset_key));
  					/* break missing intentionally */
  				case BP_VAR_UNSET:
  				case BP_VAR_IS:
  					retval = &EG(uninitialized_zval);
  					break;
  				case BP_VAR_RW:
  					zend_error(E_NOTICE,"Undefined index: %s", ZSTR_VAL(offset_key));
  					retval = zend_hash_update(ht, offset_key, &EG(uninitialized_zval));
  					break;
  				case BP_VAR_W:
  					retval = zend_hash_add_new(ht, offset_key, &EG(uninitialized_zval));
  					break;
  			}
  		}
  	} else {
  		switch (Z_TYPE_P(dim)) {
  			case IS_NULL:
  				offset_key = ZSTR_EMPTY_ALLOC();
  				goto str_index;
  			case IS_DOUBLE:
  				hval = zend_dval_to_lval(Z_DVAL_P(dim));
  				goto num_index;
  			case IS_RESOURCE:
  				zend_error(E_NOTICE, "Resource ID#%pd used as offset, casting to integer (%pd)", Z_RES_HANDLE_P(dim), Z_RES_HANDLE_P(dim));
  				hval = Z_RES_HANDLE_P(dim);
  				goto num_index;
  			case IS_FALSE:
  				hval = 0;
  				goto num_index;
  			case IS_TRUE:
  				hval = 1;
  				goto num_index;
  			case IS_REFERENCE:
  				dim = Z_REFVAL_P(dim);
  				goto try_again;
  			default:
  				zend_error(E_WARNING, "Illegal offset type");
  				retval = (type == BP_VAR_W || type == BP_VAR_RW) ?
  					&EG(error_zval) : &EG(uninitialized_zval);
  		}
  	}
  	return retval;
  }
  
  static zend_never_inline zend_long zend_check_string_offset(zval *dim, int type)
  {
  	zend_long offset;
  
  try_again:
  	if (UNEXPECTED(Z_TYPE_P(dim) != IS_LONG)) {
  		switch(Z_TYPE_P(dim)) {
  			case IS_STRING:
  				if (IS_LONG == is_numeric_string(Z_STRVAL_P(dim), Z_STRLEN_P(dim), NULL, NULL, -1)) {
  					break;
  				}
  				if (type != BP_VAR_UNSET) {
  					zend_error(E_WARNING, "Illegal string offset '%s'", Z_STRVAL_P(dim));
  				}
  				break;
  			case IS_DOUBLE:
  			case IS_NULL:
  			case IS_FALSE:
  			case IS_TRUE:
  				zend_error(E_NOTICE, "String offset cast occurred");
  				break;
  			case IS_REFERENCE:
  				dim = Z_REFVAL_P(dim);
  				goto try_again;
  			default:
  				zend_error(E_WARNING, "Illegal offset type");
  				break;
  		}
  
  		offset = zval_get_long(dim);
  	} else {
  		offset = Z_LVAL_P(dim);
  	}
  
  	return offset;
  }
  
  static zend_always_inline zend_long zend_fetch_string_offset(zval *container, zval *dim, int type)
  {
  	zend_long offset = zend_check_string_offset(dim, type);
  
  	if (Z_REFCOUNTED_P(container)) {
  		if (Z_REFCOUNT_P(container) > 1) {
  			Z_DELREF_P(container);
  			zval_copy_ctor_func(container);
  		}
  		Z_ADDREF_P(container);
  	}
  	return offset;
  }
  
  static zend_always_inline void zend_fetch_dimension_address(zval *result, zval *container, zval *dim, int dim_type, int type)
  {
      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_error(E_WARNING, "Cannot add element to the array as the next element is already occupied");
  				retval = &EG(error_zval);
  			}
  		} else {
  			retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type);
  		}
  		ZVAL_INDIRECT(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 (EXPECTED(Z_TYPE_P(container) == IS_STRING)) {
  		if (type != BP_VAR_UNSET && UNEXPECTED(Z_STRLEN_P(container) == 0)) {
  			zval_ptr_dtor_nogc(container);
  convert_to_array:
  			ZVAL_NEW_ARR(container);
  			zend_hash_init(Z_ARRVAL_P(container), 8, NULL, ZVAL_PTR_DTOR, 0);
  			goto fetch_from_array;
  		}
  
  		if (dim == NULL) {
  			zend_throw_error(NULL, "[] operator not supported for strings");
  			ZVAL_INDIRECT(result, &EG(error_zval));
  		} else {
  			zend_check_string_offset(dim, type);
  			ZVAL_INDIRECT(result, NULL); /* wrong string offset */
  		}
  	} else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
  		if (!Z_OBJ_HT_P(container)->read_dimension) {
  			zend_throw_error(NULL, "Cannot use object as array");
  			retval = &EG(error_zval);
  		} else {
  			retval = Z_OBJ_HT_P(container)->read_dimension(container, dim, type, result);
  
  			if (UNEXPECTED(retval == &EG(uninitialized_zval))) {
  				zend_class_entry *ce = Z_OBJCE_P(container);
  
  				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 (Z_REFCOUNTED_P(retval) &&
  					    Z_REFCOUNT_P(retval) > 1) {
  						if (Z_TYPE_P(retval) != IS_OBJECT) {
  							Z_DELREF_P(retval);
  							ZVAL_DUP(result, retval);
  							retval = result;
  						} else {
  							ZVAL_COPY_VALUE(result, retval);
  							retval = result;
  						}
  					}
  					if (Z_TYPE_P(retval) != IS_OBJECT) {
  						zend_class_entry *ce = Z_OBJCE_P(container);
  						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 {
  				ZVAL_INDIRECT(result, &EG(error_zval));
  			}
  		}
  	} else if (EXPECTED(Z_TYPE_P(container) <= IS_FALSE)) {
  		if (UNEXPECTED(container == &EG(error_zval))) {
  			ZVAL_INDIRECT(result, &EG(error_zval));
  		} else if (type != BP_VAR_UNSET) {
  			goto convert_to_array;
  		} else {
  			/* for read-mode only */
  			ZVAL_NULL(result);
  		}
  	} else {
  		if (type == BP_VAR_UNSET) {
  			zend_error(E_WARNING, "Cannot unset offset in a non-array variable");
  			ZVAL_NULL(result);
  		} else {
  			zend_error(E_WARNING, "Cannot use a scalar value as an array");
  			ZVAL_INDIRECT(result, &EG(error_zval));
  		}
  	}
  }
  
  static zend_never_inline void zend_fetch_dimension_address_W(zval *result, zval *container_ptr, zval *dim, int dim_type)
  {
  	zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_W);
  }
  
  static zend_never_inline void zend_fetch_dimension_address_RW(zval *result, zval *container_ptr, zval *dim, int dim_type)
  {
  	zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_RW);
  }
  
  static zend_never_inline void zend_fetch_dimension_address_UNSET(zval *result, zval *container_ptr, zval *dim, int dim_type)
  {
  	zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_UNSET);
  }
  
  static zend_always_inline void zend_fetch_dimension_address_read(zval *result, zval *container, zval *dim, int dim_type, int type)
  {
  	zval *retval;
  
  	if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
  try_array:
  		retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type);
  		ZVAL_COPY(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 (EXPECTED(Z_TYPE_P(container) == IS_STRING)) {
  		zend_long offset;
  
  try_string_offset:
  		if (UNEXPECTED(Z_TYPE_P(dim) != IS_LONG)) {
  			switch (Z_TYPE_P(dim)) {
  				/* case IS_LONG: */
  				case IS_STRING:
  					if (IS_LONG == is_numeric_string(Z_STRVAL_P(dim), Z_STRLEN_P(dim), NULL, NULL, -1)) {
  						break;
  					}
  					if (type == BP_VAR_IS) {
  						ZVAL_NULL(result);
  						return;
  					}
  					zend_error(E_WARNING, "Illegal string offset '%s'", Z_STRVAL_P(dim));
  					break;
  				case IS_DOUBLE:
  				case IS_NULL:
  				case IS_FALSE:
  				case IS_TRUE:
  					if (type != BP_VAR_IS) {
  						zend_error(E_NOTICE, "String offset cast occurred");
  					}
  					break;
  				case IS_REFERENCE:
  					dim = Z_REFVAL_P(dim);
  					goto try_string_offset;
  				default:
  					zend_error(E_WARNING, "Illegal offset type");
  					break;
  			}
  
  			offset = zval_get_long(dim);
  		} else {
  			offset = Z_LVAL_P(dim);
  		}
  
  		if (UNEXPECTED(offset < 0) || UNEXPECTED(Z_STRLEN_P(container) <= (size_t)offset)) {
  			if (type != BP_VAR_IS) {
  				zend_error(E_NOTICE, "Uninitialized string offset: %pd", offset);
  				ZVAL_EMPTY_STRING(result);
  			} else {
  				ZVAL_NULL(result);
  			}
  		} else {
  			zend_uchar c = (zend_uchar)Z_STRVAL_P(container)[offset];
  
  			if (CG(one_char_string)[c]) {
  				ZVAL_INTERNED_STR(result, CG(one_char_string)[c]);
  			} else {
  				ZVAL_NEW_STR(result, zend_string_init(Z_STRVAL_P(container) + offset, 1, 0));
  			}
  		}
  	} else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
  		if (!Z_OBJ_HT_P(container)->read_dimension) {
  			zend_throw_error(NULL, "Cannot use object as array");
  			ZVAL_NULL(result);
  		} else {
  			retval = Z_OBJ_HT_P(container)->read_dimension(container, dim, type, result);
  
  			ZEND_ASSERT(result != NULL);
  			if (retval) {
  				if (result != retval) {
  					ZVAL_COPY(result, retval);
  				}
  			} else {
  				ZVAL_NULL(result);
  			}
  		}
  	} else {
  		ZVAL_NULL(result);
  	}
  }
  
  static zend_never_inline void zend_fetch_dimension_address_read_R(zval *result, zval *container, zval *dim, int dim_type)
  {
  	zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_R);
  }
  
  static zend_never_inline void zend_fetch_dimension_address_read_IS(zval *result, zval *container, zval *dim, int dim_type)
  {
  	zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_IS);
  }
  
  ZEND_API void zend_fetch_dimension_by_zval(zval *result, zval *container, zval *dim)
  {
  	zend_fetch_dimension_address_read_R(result, container, dim, IS_TMP_VAR);
  }
  
  ZEND_API void zend_fetch_dimension_by_zval_is(zval *result, zval *container, zval *dim, int dim_type)
  {
  	zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_IS);
  }
  
  
  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)
  {
      if (container_op_type != IS_UNUSED && UNEXPECTED(Z_TYPE_P(container) != IS_OBJECT)) {
  		do {
  			if (container_op_type == IS_VAR && UNEXPECTED(container == &EG(error_zval))) {
  				ZVAL_INDIRECT(result, &EG(error_zval));
  				return;
  			}
  
  			if (Z_ISREF_P(container)) {
  				container = Z_REFVAL_P(container);
  				if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
  					break;
  				}
  			}
  
  			/* this should modify object only if it's empty */
  			if (type != BP_VAR_UNSET &&
  			    EXPECTED(Z_TYPE_P(container) <= IS_FALSE ||
  			      (Z_TYPE_P(container) == IS_STRING && Z_STRLEN_P(container)==0))) {
  				zval_ptr_dtor_nogc(container);
  				object_init(container);
  			} else {
  				zend_error(E_WARNING, "Attempt to modify property of non-object");
  				ZVAL_INDIRECT(result, &EG(error_zval));
  				return;
  			}
  		} while (0);
  	}
  	if (prop_op_type == IS_CONST &&
  	    EXPECTED(Z_OBJCE_P(container) == CACHED_PTR_EX(cache_slot))) {
  		uint32_t prop_offset = (uint32_t)(intptr_t)CACHED_PTR_EX(cache_slot + 1);
  		zend_object *zobj = Z_OBJ_P(container);
  		zval *retval;
  
  		if (EXPECTED(prop_offset != (uint32_t)ZEND_DYNAMIC_PROPERTY_OFFSET)) {
  			retval = OBJ_PROP(zobj, prop_offset);
  			if (EXPECTED(Z_TYPE_P(retval) != IS_UNDEF)) {
  				ZVAL_INDIRECT(result, retval);
  				return;
  			}
  		} else if (EXPECTED(zobj->properties != NULL)) {
  			if (UNEXPECTED(GC_REFCOUNT(zobj->properties) > 1)) {
  				if (EXPECTED(!(GC_FLAGS(zobj->properties) & IS_ARRAY_IMMUTABLE))) {
  					GC_REFCOUNT(zobj->properties)--;
  				}
  				zobj->properties = zend_array_dup(zobj->properties);
  			}
  			retval = zend_hash_find(zobj->properties, Z_STR_P(prop_ptr));
  			if (EXPECTED(retval)) {
  				ZVAL_INDIRECT(result, retval);
  				return;
  			}
  		}
  	}
  	if (EXPECTED(Z_OBJ_HT_P(container)->get_property_ptr_ptr)) {
  		zval *ptr = Z_OBJ_HT_P(container)->get_property_ptr_ptr(container, prop_ptr, type, cache_slot);
  		if (NULL == ptr) {
  			if (EXPECTED(Z_OBJ_HT_P(container)->read_property)) {
  				ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type, cache_slot, result);
  				if (ptr != result) {
  					ZVAL_INDIRECT(result, ptr);
  				} else if (UNEXPECTED(Z_ISREF_P(ptr) && Z_REFCOUNT_P(ptr) == 1)) {
  					ZVAL_UNREF(ptr);
  				}
  			} else {
  				zend_throw_error(NULL, "Cannot access undefined property for object with overloaded property access");
  				ZVAL_INDIRECT(result, &EG(error_zval));
  			}
  		} else {
  			ZVAL_INDIRECT(result, ptr);
  		}
  	} else if (EXPECTED(Z_OBJ_HT_P(container)->read_property)) {
  		zval *ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type, cache_slot, result);
  		if (ptr != result) {
  			ZVAL_INDIRECT(result, ptr);
  		} else if (UNEXPECTED(Z_ISREF_P(ptr) && Z_REFCOUNT_P(ptr) == 1)) {
  			ZVAL_UNREF(ptr);
  		}
  	} else {
  		zend_error(E_WARNING, "This object doesn't support property references");
  		ZVAL_INDIRECT(result, &EG(error_zval));
  	}
  }
  
  #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 int 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);
  	}
  
  	return 0;
  }
  
  
  #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) /* {{{ */
  {
  	if (EG(symtable_cache_ptr) >= EG(symtable_cache_limit)) {
  		zend_array_destroy(symbol_table);
  	} else {
  		/* clean before putting into the cache, since clean
  		   could call dtors, which could use cached hash */
  		zend_symtable_clean(symbol_table);
  		*(++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);
  	zval *end = cv + EX(func)->op_array.last_var;
  	while (EXPECTED(cv != end)) {
  		if (Z_REFCOUNTED_P(cv)) {
  			if (!Z_DELREF_P(cv)) {
  				zend_refcounted *r = Z_COUNTED_P(cv);
  				ZVAL_NULL(cv);
  				zval_dtor_func_for_ptr(r);
  			} else {
  				GC_ZVAL_CHECK_POSSIBLE_ROOT(cv);
  			}
  		}
  		cv++;
   	}
  }
  /* }}} */
  
  void zend_free_compiled_variables(zend_execute_data *execute_data) /* {{{ */
  {
  	i_free_compiled_variables(execute_data);
  }
  /* }}} */
  
  #ifdef ZEND_WIN32
  # define ZEND_VM_INTERRUPT_CHECK() do { \
  		if (EG(timed_out)) { \
  			zend_timeout(0); \
  		} \
  	} while (0)
  #else
  # define ZEND_VM_INTERRUPT_CHECK() do { \
  	} while (0)
  #endif
  
  /*
   * Stack Frame Layout (the whole stack frame is allocated at once)
   * ==================
   *
   *                             +========================================+
   * EG(current_execute_data) -> | zend_execute_data                      |
   *                             +----------------------------------------+
   *     EX_CV_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)                  |
   *                             | ...                                    |
   *                             +----------------------------------------+
   */
  
  static zend_always_inline void i_init_func_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value, int check_this) /* {{{ */
  {
  	uint32_t first_extra_arg, num_args;
  	ZEND_ASSERT(EX(func) == (zend_function*)op_array);
  
  	EX(opline) = op_array->opcodes;
  	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 (EXPECTED(!(op_array->fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE))) {
  			zval *end, *src, *dst;
  			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 */
  				EX(opline) += first_extra_arg;
  			}
  
  			/* move extra args into separate array after all CV and TMP vars */
  			end = EX_VAR_NUM(first_extra_arg - 1);
  			src = end + (num_args - first_extra_arg);
  			dst = src + (op_array->last_var + op_array->T - first_extra_arg);
  			if (EXPECTED(src != dst)) {
  				do {
  					type_flags |= Z_TYPE_INFO_P(src);
  					ZVAL_COPY_VALUE(dst, src);
  					ZVAL_UNDEF(src);
  					src--;
  					dst--;
  				} while (src != end);
  			} else {
  				do {
  					type_flags |= Z_TYPE_INFO_P(src);
  					src--;
  				} while (src != end);
  			}
  			ZEND_ADD_CALL_FLAG(execute_data, ((type_flags >> Z_TYPE_FLAGS_SHIFT) & IS_TYPE_REFCOUNTED));
  		}
  	} else if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
  		/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
  		EX(opline) += num_args;
  	}
  
  	/* Initialize CV variables (skip arguments) */
  	if (EXPECTED((int)num_args < op_array->last_var)) {
  		zval *var = EX_VAR_NUM(num_args);
  		zval *end = EX_VAR_NUM(op_array->last_var);
  
  		do {
  			ZVAL_UNDEF(var);
  			var++;
  		} while (var != end);
  	}
  
  	if (check_this && op_array->this_var != (uint32_t)-1 && EXPECTED(Z_OBJ(EX(This)))) {
  		ZVAL_OBJ(EX_VAR(op_array->this_var), Z_OBJ(EX(This)));
  		GC_REFCOUNT(Z_OBJ(EX(This)))++;
  	}
  
  	if (UNEXPECTED(!op_array->run_time_cache)) {
  		op_array->run_time_cache = zend_arena_alloc(&CG(arena), op_array->cache_size);
  		memset(op_array->run_time_cache, 0, op_array->cache_size);
  	}
  	EX_LOAD_RUN_TIME_CACHE(op_array);
  	EX_LOAD_LITERALS(op_array);
  
  	EG(current_execute_data) = execute_data;
  	ZEND_VM_INTERRUPT_CHECK();
  }
  /* }}} */
  
  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 (UNEXPECTED(op_array->this_var != (uint32_t)-1) && EXPECTED(Z_OBJ(EX(This)))) {
  		GC_REFCOUNT(Z_OBJ(EX(This)))++;
  		if (!zend_hash_str_add(EX(symbol_table), "this", sizeof("this")-1, &EX(This))) {
  			GC_REFCOUNT(Z_OBJ(EX(This)))--;
  		}
  	}
  
  	zend_attach_symbol_table(execute_data);
  
  	if (!op_array->run_time_cache) {
  		op_array->run_time_cache = emalloc(op_array->cache_size);
  		memset(op_array->run_time_cache, 0, op_array->cache_size);
  	}
  	EX_LOAD_RUN_TIME_CACHE(op_array);
  	EX_LOAD_LITERALS(op_array);
  
  	EG(current_execute_data) = execute_data;
  	ZEND_VM_INTERRUPT_CHECK();
  }
  /* }}} */
  
  static zend_always_inline void i_init_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 (UNEXPECTED(EX(symbol_table) != NULL)) {
  		if (UNEXPECTED(op_array->this_var != (uint32_t)-1) && EXPECTED(Z_OBJ(EX(This)))) {
  			GC_REFCOUNT(Z_OBJ(EX(This)))++;
  			if (!zend_hash_str_add(EX(symbol_table), "this", sizeof("this")-1, &EX(This))) {
  				GC_REFCOUNT(Z_OBJ(EX(This)))--;
  			}
  		}
  
  		zend_attach_symbol_table(execute_data);
  	} else {
  		uint32_t first_extra_arg, num_args;
  
  		/* Handle arguments */
  		first_extra_arg = op_array->num_args;
  		num_args = EX_NUM_ARGS();
  		if (UNEXPECTED(num_args > first_extra_arg)) {
  			if (EXPECTED(!(op_array->fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE))) {
  				zval *end, *src, *dst;
  				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 */
  					EX(opline) += first_extra_arg;
  				}
  
  				/* move extra args into separate array after all CV and TMP vars */
  				end = EX_VAR_NUM(first_extra_arg - 1);
  				src = end + (num_args - first_extra_arg);
  				dst = src + (op_array->last_var + op_array->T - first_extra_arg);
  				if (EXPECTED(src != dst)) {
  					do {
  						type_flags |= Z_TYPE_INFO_P(src);
  						ZVAL_COPY_VALUE(dst, src);
  						ZVAL_UNDEF(src);
  						src--;
  						dst--;
  					} while (src != end);
  				} else {
  					do {
  						type_flags |= Z_TYPE_INFO_P(src);
  						src--;
  					} while (src != end);
  				}
  				ZEND_ADD_CALL_FLAG(execute_data, ((type_flags >> Z_TYPE_FLAGS_SHIFT) & IS_TYPE_REFCOUNTED));
  			}
  		} else if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
  			/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
  			EX(opline) += num_args;
  		}
  
  		/* Initialize CV variables (skip arguments) */
  		if (EXPECTED((int)num_args < op_array->last_var)) {
  			zval *var = EX_VAR_NUM(num_args);
  			zval *end = EX_VAR_NUM(op_array->last_var);
  
  			do {
  				ZVAL_UNDEF(var);
  				var++;
  			} while (var != end);
  		}
  
  		if (op_array->this_var != (uint32_t)-1 && EXPECTED(Z_OBJ(EX(This)))) {
  			ZVAL_OBJ(EX_VAR(op_array->this_var), Z_OBJ(EX(This)));
  			GC_REFCOUNT(Z_OBJ(EX(This)))++;
  		}
  	}
  
  	if (!op_array->run_time_cache) {
  		if (op_array->function_name) {
  			op_array->run_time_cache = zend_arena_alloc(&CG(arena), op_array->cache_size);
  		} else {
  			op_array->run_time_cache = emalloc(op_array->cache_size);
  		}
  		memset(op_array->run_time_cache, 0, op_array->cache_size);
  	}
  	EX_LOAD_RUN_TIME_CACHE(op_array);
  	EX_LOAD_LITERALS(op_array);
  
  	EG(current_execute_data) = execute_data;
  	ZEND_VM_INTERRUPT_CHECK();
  }
  /* }}} */
  
  ZEND_API zend_execute_data *zend_create_generator_execute_data(zend_execute_data *call, zend_op_array *op_array, zval *return_value) /* {{{ */
  {
  	/*
  	 * Normally the execute_data is allocated on the VM stack (because it does
  	 * not actually do any allocation and thus is faster). For generators
  	 * though this behavior would be suboptimal, because the (rather large)
  	 * structure would have to be copied back and forth every time execution is
  	 * suspended or resumed. That's why for generators the execution context
  	 * is allocated using a separate VM stack, thus allowing to save and
  	 * restore it simply by replacing a pointer.
  	 */
  	zend_execute_data *execute_data;
  	uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
  	size_t stack_size = (ZEND_CALL_FRAME_SLOT + MAX(op_array->last_var + op_array->T, num_args)) * sizeof(zval);
  	uint32_t call_info;
  
  	EG(vm_stack) = zend_vm_stack_new_page(
  		EXPECTED(stack_size < ZEND_VM_STACK_FREE_PAGE_SIZE(1)) ?
  			ZEND_VM_STACK_PAGE_SIZE(1) :
  			ZEND_VM_STACK_PAGE_ALIGNED_SIZE(1, stack_size),
  		NULL);
  	EG(vm_stack_top) = EG(vm_stack)->top;
  	EG(vm_stack_end) = EG(vm_stack)->end;
  
  	call_info = ZEND_CALL_TOP_FUNCTION | ZEND_CALL_ALLOCATED | (ZEND_CALL_INFO(call) & (ZEND_CALL_CLOSURE|ZEND_CALL_RELEASE_THIS));
  	if (Z_OBJ(call->This)) {
  		call_info |= ZEND_CALL_RELEASE_THIS;
  	}
  	execute_data = zend_vm_stack_push_call_frame(
  		call_info,
  		(zend_function*)op_array,
  		num_args,
  		call->called_scope,
  		Z_OBJ(call->This));
  	EX(prev_execute_data) = NULL;
  	EX_NUM_ARGS() = num_args;
  
  	/* copy arguments */
  	if (num_args > 0) {
  		zval *arg_src = ZEND_CALL_ARG(call, 1);
  		zval *arg_dst = ZEND_CALL_ARG(execute_data, 1);
  		zval *end = arg_src + num_args;
  
  		do {
  			ZVAL_COPY_VALUE(arg_dst, arg_src);
  			arg_src++;
  			arg_dst++;
  		} while (arg_src != end);
  	}
  
  	EX(symbol_table) = NULL;
  
  	i_init_func_execute_data(execute_data, op_array, return_value, 1);
  
  	return execute_data;
  }
  /* }}} */
  
  ZEND_API void zend_init_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_execute_data(execute_data, op_array, return_value);
  }
  /* }}} */
  
  static zend_always_inline zend_bool zend_is_by_ref_func_arg_fetch(const zend_op *opline, zend_execute_data *call) /* {{{ */
  {
  	uint32_t arg_num = opline->extended_value & ZEND_FETCH_ARG_MASK;
  	return ARG_SHOULD_BE_SENT_BY_REF(call->func, arg_num);
  }
  /* }}} */
  
  static 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_SET_CALL_INFO(new_call, ZEND_CALL_INFO(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 becames empty */
  	if (UNEXPECTED(EG(vm_stack)->prev->top == ZEND_VM_STACK_ELEMETS(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 void zend_vm_stack_extend_call_frame(zend_execute_data **call, uint32_t passed_args, uint32_t additional_args) /* {{{ */
  {
  	if (EXPECTED((uint32_t)(EG(vm_stack_end) - EG(vm_stack_top)) > additional_args)) {
  		EG(vm_stack_top) += additional_args;
  	} else {
  		*call = zend_vm_stack_copy_call_frame(*call, passed_args, additional_args);
  	}
  }
  /* }}} */
  
  static zend_always_inline zend_generator *zend_get_running_generator(zend_execute_data *execute_data) /* {{{ */
  {
  	/* 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;
  }
  /* }}} */
  
  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_DYNAMIC_CALL ||
  			opline->opcode == ZEND_INIT_METHOD_CALL ||
  			opline->opcode == ZEND_INIT_STATIC_METHOD_CALL)) {
  			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:
  						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) {
  							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_REF:
  					case ZEND_SEND_VAR_NO_REF:
  					case ZEND_SEND_USER:
  						if (level == 0) {
  							ZEND_CALL_NUM_ARGS(call) = opline->op2.num;
  							do_exit = 1;
  						}
  						break;
  					case ZEND_SEND_ARRAY:
  					case ZEND_SEND_UNPACK:
  						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:
  							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);
  			}
  
  			zend_vm_stack_free_args(EX(call));
  
  			if (ZEND_CALL_INFO(call) & ZEND_CALL_RELEASE_THIS) {
  				if (ZEND_CALL_INFO(call) & ZEND_CALL_CTOR) {
  					if (!(ZEND_CALL_INFO(call) & ZEND_CALL_CTOR_RESULT_UNUSED)) {
  						GC_REFCOUNT(Z_OBJ(call->This))--;
  					}
  					if (GC_REFCOUNT(Z_OBJ(call->This)) == 1) {
  						zend_object_store_ctor_failed(Z_OBJ(call->This));
  					}
  				}
  				OBJ_RELEASE(Z_OBJ(call->This));
  			}
  			if (call->func->common.fn_flags & ZEND_ACC_CLOSURE) {
  				zend_object_release((zend_object *) call->func->common.prototype);
  			} else if (call->func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
  				zend_string_release(call->func->common.function_name);
  				zend_free_trampoline(call->func);
  			}
  
  			EX(call) = call->prev_execute_data;
  			zend_vm_stack_free_call_frame(call);
  			call = EX(call);
  		} while (call);
  	}
  }
  /* }}} */
  
  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_brk_cont; i++) {
  		const zend_brk_cont_element *brk_cont = &EX(func)->op_array.brk_cont_array[i];
  		if (brk_cont->start < 0) {
  			continue;
  		} else if (brk_cont->start > op_num) {
  			/* further blocks will not be relevant... */
  			break;
  		} else if (op_num < brk_cont->brk) {
  			if (!catch_op_num || catch_op_num >= brk_cont->brk) {
  				zend_op *brk_opline = &EX(func)->op_array.opcodes[brk_cont->brk];
  
  				if (brk_opline->opcode == ZEND_FREE) {
  					zval_ptr_dtor_nogc(EX_VAR(brk_opline->op1.var));
  				} else if (brk_opline->opcode == ZEND_FE_FREE) {
  					zval *var = EX_VAR(brk_opline->op1.var);
  					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 (brk_opline->opcode == ZEND_ROPE_END) {
  					zend_string **rope = (zend_string **) EX_VAR(brk_opline->op1.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 != brk_opline->op1.var) {
  						ZEND_ASSERT(last >= EX(func)->op_array.opcodes);
  						last--;
  					}
  					if (last->opcode == ZEND_ROPE_INIT) {
  						zend_string_release(*rope);
  					} else {
  						int j = last->extended_value;
  						do {
  							zend_string_release(rope[j]);
  						} while (j--);
  					}
  				} else if (brk_opline->opcode == ZEND_END_SILENCE) {
  					/* restore previous error_reporting value */
  					if (!EG(error_reporting) && Z_LVAL_P(EX_VAR(brk_opline->op1.var)) != 0) {
  						EG(error_reporting) = Z_LVAL_P(EX_VAR(brk_opline->op1.var));
  					}
  				}
  			}
  		}
  	}
  }
  /* }}} */
  
  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);
  }
  
  #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 "r28"
  #  define ZEND_VM_IP_GLOBAL_REG "r29"
  # elif defined(__IBMC__) && ZEND_GCC_VERSION >= 4002 && defined(__powerpc64__)
  #  define ZEND_VM_FP_GLOBAL_REG "r28"
  #  define ZEND_VM_IP_GLOBAL_REG "r29"
  # endif
  #endif
  
  #define ZEND_VM_NEXT_OPCODE_EX(check_exception, skip) \
  	CHECK_SYMBOL_TABLES() \
  	if (check_exception) { \
  		OPLINE = EX(opline) + (skip); \
  	} else { \
  		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(new_op) \
  	CHECK_SYMBOL_TABLES() \
  	OPLINE = 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(new_op) \
  	if (EXPECTED(!EG(exception))) { \
  		ZEND_VM_SET_OPCODE(new_op); \
  	} else { \
  		LOAD_OPLINE(); \
  	} \
  	ZEND_VM_CONTINUE()
  
  #define ZEND_VM_INC_OPCODE() \
  	OPLINE++
  
  
  #ifndef VM_SMART_OPCODES
  # define VM_SMART_OPCODES 1
  #endif
  
  #if VM_SMART_OPCODES
  # 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 { \
  		int __result; \
  		if (EXPECTED((opline+1)->opcode == ZEND_JMPZ)) { \
  			__result = (_result); \
  		} else if (EXPECTED((opline+1)->opcode == ZEND_JMPNZ)) { \
  			__result = !(_result); \
  		} else { \
  			break; \
  		} \
  		if ((_check) && UNEXPECTED(EG(exception))) { \
  			HANDLE_EXCEPTION(); \
  		} \
  		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)
  #else
  # define ZEND_VM_REPEATABLE_OPCODE
  # define ZEND_VM_REPEAT_OPCODE(_opcode)
  # define ZEND_VM_SMART_BRANCH(_result, _check)
  #endif
  
  #ifdef __GNUC__
  # define ZEND_VM_GUARD(name) __asm__("#" #name)
  #else
  # define ZEND_VM_GUARD(name)
  #endif
  
  #define GET_OP1_UNDEF_CV(ptr, type) \
  	_get_zval_cv_lookup_ ## type(ptr, opline->op1.var, execute_data)
  #define GET_OP2_UNDEF_CV(ptr, type) \
  	_get_zval_cv_lookup_ ## type(ptr, opline->op2.var, execute_data)
  
  #include "zend_vm_execute.h"
  
  ZEND_API int 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(int op_type, const znode_op *node, const zend_execute_data *execute_data, zend_free_op *should_free, int type)
  {
  	return get_zval_ptr(op_type, *node, execute_data, should_free, type);
  }
  
  ZEND_API void ZEND_FASTCALL zend_check_internal_arg_type(zend_function *zf, uint32_t arg_num, zval *arg)
  {
  	zend_verify_internal_arg_type(zf, arg_num, arg);
  }
  
  ZEND_API int ZEND_FASTCALL zend_check_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, zval *default_value, void **cache_slot)
  {
  	return zend_verify_arg_type(zf, arg_num, arg, default_value, cache_slot);
  }
  
  ZEND_API void ZEND_FASTCALL zend_check_missing_arg(zend_execute_data *execute_data, uint32_t arg_num, void **cache_slot)
  {
  	zend_verify_missing_arg(execute_data, arg_num, cache_slot);
  }
  
  /*
   * Local variables:
   * tab-width: 4
   * c-basic-offset: 4
   * indent-tabs-mode: t
   * End:
   */
  