test.c

/*
  +----------------------------------------------------------------------+
  | Copyright (c) The PHP Group                                          |
  +----------------------------------------------------------------------+
  | This source file is subject to version 3.01 of the PHP license,      |
  | that is bundled with this package in the file LICENSE, and is        |
  | available through the world-wide-web at the following url:           |
  | https://www.php.net/license/3_01.txt                                 |
  | If you did not receive a copy of the PHP license and are unable to   |
  | obtain it through the world-wide-web, please send a note to          |
  | license@php.net so we can mail you a copy immediately.               |
  +----------------------------------------------------------------------+
  | Author:                                                              |
  +----------------------------------------------------------------------+
*/

#include "zend_modules.h"
#include "zend_types.h"
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_test.h"
#include "observer.h"
#include "fiber.h"
#include "iterators.h"
#include "object_handlers.h"
#include "zend_attributes.h"
#include "zend_enum.h"
#include "zend_interfaces.h"
#include "zend_weakrefs.h"
#include "Zend/Optimizer/zend_optimizer.h"
#include "Zend/zend_alloc.h"
#include "test_arginfo.h"
#include "zend_call_stack.h"
#include "zend_exceptions.h"
#include "zend_mm_custom_handlers.h"

#if defined(HAVE_LIBXML) && !defined(PHP_WIN32)
# include <libxml/globals.h>
# include <libxml/parser.h>
#endif

ZEND_DECLARE_MODULE_GLOBALS(zend_test)

static zend_class_entry *zend_test_interface;
static zend_class_entry *zend_test_class;
static zend_class_entry *zend_test_child_class;
static zend_class_entry *zend_attribute_test_class;
static zend_class_entry *zend_test_trait;
static zend_class_entry *zend_test_attribute;
static zend_class_entry *zend_test_repeatable_attribute;
static zend_class_entry *zend_test_parameter_attribute;
static zend_class_entry *zend_test_property_attribute;
static zend_class_entry *zend_test_attribute_with_arguments;
static zend_class_entry *zend_test_class_with_method_with_parameter_attribute;
static zend_class_entry *zend_test_child_class_with_method_with_parameter_attribute;
static zend_class_entry *zend_test_class_with_property_attribute;
static zend_class_entry *zend_test_forbid_dynamic_call;
static zend_class_entry *zend_test_ns_foo_class;
static zend_class_entry *zend_test_ns_unlikely_compile_error_class;
static zend_class_entry *zend_test_ns_not_unlikely_compile_error_class;
static zend_class_entry *zend_test_ns2_foo_class;
static zend_class_entry *zend_test_ns2_ns_foo_class;
static zend_class_entry *zend_test_unit_enum;
static zend_class_entry *zend_test_string_enum;
static zend_class_entry *zend_test_int_enum;
static zend_class_entry *zend_test_magic_call;
static zend_object_handlers zend_test_class_handlers;

static int le_throwing_resource;

static ZEND_FUNCTION(zend_test_func)
{
	RETVAL_STR_COPY(EX(func)->common.function_name);

	/* Cleanup trampoline */
	ZEND_ASSERT(EX(func)->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE);
	zend_string_release(EX(func)->common.function_name);
	zend_free_trampoline(EX(func));
	EX(func) = NULL;
}

static ZEND_FUNCTION(zend_test_array_return)
{
	ZEND_PARSE_PARAMETERS_NONE();
}

static ZEND_FUNCTION(zend_test_nullable_array_return)
{
	ZEND_PARSE_PARAMETERS_NONE();

	RETURN_NULL();
}

static ZEND_FUNCTION(zend_test_void_return)
{
	/* dummy */
	ZEND_PARSE_PARAMETERS_NONE();
}

static void pass1(zend_script *script, void *context)
{
	php_printf("pass1\n");
}

static void pass2(zend_script *script, void *context)
{
	php_printf("pass2\n");
}

static ZEND_FUNCTION(zend_test_deprecated)
{
	zval *arg1;

	zend_parse_parameters(ZEND_NUM_ARGS(), "|z", &arg1);
}

static ZEND_FUNCTION(zend_test_deprecated_attr)
{
	ZEND_PARSE_PARAMETERS_NONE();
}

static ZEND_FUNCTION(zend_test_nodiscard)
{
	ZEND_PARSE_PARAMETERS_NONE();

	RETURN_LONG(1);
}

static ZEND_FUNCTION(zend_test_deprecated_nodiscard)
{
	ZEND_PARSE_PARAMETERS_NONE();

	RETURN_LONG(1);
}

/* Create a string without terminating null byte. Must be terminated with
 * zend_terminate_string() before destruction, otherwise a warning is issued
 * in debug builds. */
static ZEND_FUNCTION(zend_create_unterminated_string)
{
	zend_string *str, *res;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &str) == FAILURE) {
		RETURN_THROWS();
	}

	res = zend_string_alloc(ZSTR_LEN(str), 0);
	memcpy(ZSTR_VAL(res), ZSTR_VAL(str), ZSTR_LEN(str));
	/* No trailing null byte */

	RETURN_STR(res);
}

/* Enforce terminate null byte on string. This avoids a warning in debug builds. */
static ZEND_FUNCTION(zend_terminate_string)
{
	zend_string *str;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &str) == FAILURE) {
		RETURN_THROWS();
	}

	ZSTR_VAL(str)[ZSTR_LEN(str)] = '\0';
}

/* Cause an intentional memory leak, for testing/debugging purposes */
static ZEND_FUNCTION(zend_leak_bytes)
{
	zend_long leakbytes = 3;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|l", &leakbytes) == FAILURE) {
		RETURN_THROWS();
	}

	emalloc(leakbytes);
}

/* Leak a refcounted variable */
static ZEND_FUNCTION(zend_leak_variable)
{
	zval *zv;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &zv) == FAILURE) {
		RETURN_THROWS();
	}

	if (!Z_REFCOUNTED_P(zv)) {
		zend_error(E_WARNING, "Cannot leak variable that is not refcounted");
		return;
	}

	Z_ADDREF_P(zv);
}

static ZEND_FUNCTION(zend_delref)
{
	zval *zv;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &zv) == FAILURE) {
		RETURN_THROWS();
	}

	Z_TRY_DELREF_P(zv);

	RETURN_NULL();
}

/* Tests Z_PARAM_OBJ_OR_STR */
static ZEND_FUNCTION(zend_string_or_object)
{
	zend_string *str;
	zend_object *object;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_OBJ_OR_STR(object, str)
	ZEND_PARSE_PARAMETERS_END();

	if (str) {
		RETURN_STR_COPY(str);
	} else {
		RETURN_OBJ_COPY(object);
	}
}

/* Tests Z_PARAM_OBJ_OR_STR_OR_NULL */
static ZEND_FUNCTION(zend_string_or_object_or_null)
{
	zend_string *str;
	zend_object *object;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_OBJ_OR_STR_OR_NULL(object, str)
	ZEND_PARSE_PARAMETERS_END();

	if (str) {
		RETURN_STR_COPY(str);
	} else if (object) {
		RETURN_OBJ_COPY(object);
	} else {
		RETURN_NULL();
	}
}

/* Tests Z_PARAM_OBJ_OF_CLASS_OR_STR */
static ZEND_FUNCTION(zend_string_or_stdclass)
{
	zend_string *str;
	zend_object *object;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_OBJ_OF_CLASS_OR_STR(object, zend_standard_class_def, str)
	ZEND_PARSE_PARAMETERS_END();

	if (str) {
		RETURN_STR_COPY(str);
	} else {
		RETURN_OBJ_COPY(object);
	}
}

static ZEND_FUNCTION(zend_test_compile_string)
{
	zend_string *source_string = NULL;
	zend_string *filename = NULL;
	zend_long position = ZEND_COMPILE_POSITION_AT_OPEN_TAG;

	ZEND_PARSE_PARAMETERS_START(3, 3)
		Z_PARAM_STR(source_string)
		Z_PARAM_PATH_STR(filename)
		Z_PARAM_LONG(position)
	ZEND_PARSE_PARAMETERS_END();

	zend_op_array *op_array = NULL;

	op_array = compile_string(source_string, ZSTR_VAL(filename), position);

	if (op_array) {
		zval retval;

		zend_try {
			ZVAL_UNDEF(&retval);
			zend_execute(op_array, &retval);
		} zend_catch {
			destroy_op_array(op_array);
			efree_size(op_array, sizeof(zend_op_array));
			zend_bailout();
		} zend_end_try();

		destroy_op_array(op_array);
		efree_size(op_array, sizeof(zend_op_array));
	}

	return;
}

/* Tests Z_PARAM_OBJ_OF_CLASS_OR_STR_OR_NULL */
static ZEND_FUNCTION(zend_string_or_stdclass_or_null)
{
	zend_string *str;
	zend_object *object;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_OBJ_OF_CLASS_OR_STR_OR_NULL(object, zend_standard_class_def, str)
	ZEND_PARSE_PARAMETERS_END();

	if (str) {
		RETURN_STR_COPY(str);
	} else if (object) {
		RETURN_OBJ_COPY(object);
	} else {
		RETURN_NULL();
	}
}

/* Tests Z_PARAM_NUMBER_OR_STR */
static ZEND_FUNCTION(zend_number_or_string)
{
	zval *input;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_NUMBER_OR_STR(input)
	ZEND_PARSE_PARAMETERS_END();

	switch (Z_TYPE_P(input)) {
		case IS_LONG:
			RETURN_LONG(Z_LVAL_P(input));
		case IS_DOUBLE:
			RETURN_DOUBLE(Z_DVAL_P(input));
		case IS_STRING:
			RETURN_STR_COPY(Z_STR_P(input));
		EMPTY_SWITCH_DEFAULT_CASE();
	}
}

/* Tests Z_PARAM_NUMBER_OR_STR_OR_NULL */
static ZEND_FUNCTION(zend_number_or_string_or_null)
{
	zval *input;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_NUMBER_OR_STR_OR_NULL(input)
	ZEND_PARSE_PARAMETERS_END();

	if (!input) {
		RETURN_NULL();
	}

	switch (Z_TYPE_P(input)) {
		case IS_LONG:
			RETURN_LONG(Z_LVAL_P(input));
		case IS_DOUBLE:
			RETURN_DOUBLE(Z_DVAL_P(input));
		case IS_STRING:
			RETURN_STR_COPY(Z_STR_P(input));
		EMPTY_SWITCH_DEFAULT_CASE();
	}
}

static ZEND_FUNCTION(zend_weakmap_attach)
{
	zval *value;
	zend_object *obj;

	ZEND_PARSE_PARAMETERS_START(2, 2)
			Z_PARAM_OBJ(obj)
			Z_PARAM_ZVAL(value)
	ZEND_PARSE_PARAMETERS_END();

	if (zend_weakrefs_hash_add(&ZT_G(global_weakmap), obj, value)) {
		Z_TRY_ADDREF_P(value);
		RETURN_TRUE;
	}
	RETURN_FALSE;
}

static ZEND_FUNCTION(zend_weakmap_remove)
{
	zend_object *obj;

	ZEND_PARSE_PARAMETERS_START(1, 1)
			Z_PARAM_OBJ(obj)
	ZEND_PARSE_PARAMETERS_END();

	RETURN_BOOL(zend_weakrefs_hash_del(&ZT_G(global_weakmap), obj) == SUCCESS);
}

static ZEND_FUNCTION(zend_weakmap_dump)
{
	ZEND_PARSE_PARAMETERS_NONE();
	RETURN_ARR(zend_array_dup(&ZT_G(global_weakmap)));
}

static ZEND_FUNCTION(zend_get_current_func_name)
{
    ZEND_PARSE_PARAMETERS_NONE();

    zend_string *function_name = get_function_or_method_name(EG(current_execute_data)->prev_execute_data->func);

    RETURN_STR(function_name);
}

#if defined(HAVE_LIBXML) && !defined(PHP_WIN32)
static ZEND_FUNCTION(zend_test_override_libxml_global_state)
{
	ZEND_PARSE_PARAMETERS_NONE();

	ZEND_DIAGNOSTIC_IGNORED_START("-Wdeprecated-declarations")
	xmlLoadExtDtdDefaultValue = 1;
	xmlDoValidityCheckingDefaultValue = 1;
	(void) xmlPedanticParserDefault(1);
	(void) xmlSubstituteEntitiesDefault(1);
	(void) xmlLineNumbersDefault(1);
	(void) xmlKeepBlanksDefault(0);
	ZEND_DIAGNOSTIC_IGNORED_END
}
#endif

/* TESTS Z_PARAM_ITERABLE and Z_PARAM_ITERABLE_OR_NULL */
static ZEND_FUNCTION(zend_iterable)
{
	zval *arg1, *arg2;

	ZEND_PARSE_PARAMETERS_START(1, 2)
		Z_PARAM_ITERABLE(arg1)
		Z_PARAM_OPTIONAL
		Z_PARAM_ITERABLE_OR_NULL(arg2)
	ZEND_PARSE_PARAMETERS_END();
}

static ZEND_FUNCTION(zend_iterable_legacy)
{
	zval *arg1, *arg2;

	ZEND_PARSE_PARAMETERS_START(1, 2)
		Z_PARAM_ITERABLE(arg1)
		Z_PARAM_OPTIONAL
		Z_PARAM_ITERABLE_OR_NULL(arg2)
	ZEND_PARSE_PARAMETERS_END();

	RETURN_COPY(arg1);
}

ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_zend_iterable_legacy, 0, 1, IS_ITERABLE, 0)
	ZEND_ARG_TYPE_INFO(0, arg1, IS_ITERABLE, 0)
	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, arg2, IS_ITERABLE, 1, "null")
ZEND_END_ARG_INFO()

static const zend_function_entry ext_function_legacy[] = {
	ZEND_FE(zend_iterable_legacy, arginfo_zend_iterable_legacy)
	ZEND_FE_END
};

/* Call a method on a class or object using zend_call_method() */
static ZEND_FUNCTION(zend_call_method)
{
	zend_string *method_name;
	zval *class_or_object, *arg1 = NULL, *arg2 = NULL;
	zend_object *obj = NULL;
	zend_class_entry *ce = NULL;
	int argc = ZEND_NUM_ARGS();

	ZEND_PARSE_PARAMETERS_START(2, 4)
		Z_PARAM_ZVAL(class_or_object)
		Z_PARAM_STR(method_name)
		Z_PARAM_OPTIONAL
		Z_PARAM_ZVAL(arg1)
		Z_PARAM_ZVAL(arg2)
	ZEND_PARSE_PARAMETERS_END();

	if (Z_TYPE_P(class_or_object) == IS_OBJECT) {
		obj = Z_OBJ_P(class_or_object);
		ce = obj->ce;
	} else if (Z_TYPE_P(class_or_object) == IS_STRING) {
		ce = zend_lookup_class(Z_STR_P(class_or_object));
		if (!ce) {
			zend_error_noreturn(E_ERROR, "Unknown class '%s'", Z_STRVAL_P(class_or_object));
			return;
		}
	} else {
		zend_argument_type_error(1, "must be of type object|string, %s given", zend_zval_value_name(class_or_object));
		return;
	}

	ZEND_ASSERT((argc >= 2) && (argc <= 4));
	zend_call_method(obj, ce, NULL, ZSTR_VAL(method_name), ZSTR_LEN(method_name), return_value, argc - 2, arg1, arg2);
}

/* Instantiate a class and run the constructor via object_init_with_constructor */
static ZEND_FUNCTION(zend_object_init_with_constructor)
{
	zend_class_entry *ce = NULL;
	zval *args;
	uint32_t num_args;
	HashTable *named_args;

	ZEND_PARSE_PARAMETERS_START(1, -1)
		Z_PARAM_CLASS(ce)
		Z_PARAM_VARIADIC_WITH_NAMED(args, num_args, named_args)
	ZEND_PARSE_PARAMETERS_END();

	zval obj;
	/* We don't use return_value directly to check for memory leaks of the API on failure */
	zend_result status = object_init_with_constructor(&obj, ce, num_args, args, named_args);
	if (status == FAILURE) {
		RETURN_THROWS();
	}
	ZEND_ASSERT(!EG(exception));
	ZVAL_COPY_VALUE(return_value, &obj);
}

static ZEND_FUNCTION(zend_get_unit_enum)
{
	ZEND_PARSE_PARAMETERS_NONE();

	RETURN_OBJ_COPY(zend_enum_get_case_cstr(zend_test_unit_enum, "Foo"));
}

static ZEND_FUNCTION(zend_test_zend_ini_parse_quantity)
{
	zend_string *str;
	zend_string *errstr;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_STR(str)
	ZEND_PARSE_PARAMETERS_END();

	RETVAL_LONG(zend_ini_parse_quantity(str, &errstr));

	if (errstr) {
		zend_error(E_WARNING, "%s", ZSTR_VAL(errstr));
		zend_string_release(errstr);
	}
}

static ZEND_FUNCTION(zend_test_zend_ini_parse_uquantity)
{
	zend_string *str;
	zend_string *errstr;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_STR(str)
	ZEND_PARSE_PARAMETERS_END();

	RETVAL_LONG((zend_long)zend_ini_parse_uquantity(str, &errstr));

	if (errstr) {
		zend_error(E_WARNING, "%s", ZSTR_VAL(errstr));
		zend_string_release(errstr);
	}
}

static ZEND_FUNCTION(zend_test_zend_ini_str)
{
	ZEND_PARSE_PARAMETERS_NONE();

	RETURN_STR(ZT_G(str_test));
}

static ZEND_FUNCTION(zend_test_is_string_marked_as_valid_utf8)
{
	zend_string *str;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_STR(str)
	ZEND_PARSE_PARAMETERS_END();

	RETURN_BOOL(ZSTR_IS_VALID_UTF8(str));
}

static ZEND_FUNCTION(ZendTestNS2_namespaced_func)
{
	ZEND_PARSE_PARAMETERS_NONE();
	RETURN_TRUE;
}

static ZEND_FUNCTION(ZendTestNS2_namespaced_deprecated_func)
{
	ZEND_PARSE_PARAMETERS_NONE();
}

static ZEND_FUNCTION(ZendTestNS2_ZendSubNS_namespaced_func)
{
	ZEND_PARSE_PARAMETERS_NONE();
	RETURN_TRUE;
}

static ZEND_FUNCTION(ZendTestNS2_ZendSubNS_namespaced_deprecated_func)
{
	ZEND_PARSE_PARAMETERS_NONE();
}

static ZEND_FUNCTION(zend_test_parameter_with_attribute)
{
	zend_string *parameter;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_STR(parameter)
	ZEND_PARSE_PARAMETERS_END();

	RETURN_LONG(1);
}

static ZEND_FUNCTION(zend_test_attribute_with_named_argument)
{
	ZEND_PARSE_PARAMETERS_NONE();
}

#ifdef ZEND_CHECK_STACK_LIMIT
static ZEND_FUNCTION(zend_test_zend_call_stack_get)
{
	zend_call_stack stack;

	ZEND_PARSE_PARAMETERS_NONE();

	if (zend_call_stack_get(&stack)) {
		zend_string *str;

		array_init(return_value);

		str = strpprintf(0, "%p", stack.base);
		add_assoc_str(return_value, "base", str);

		str = strpprintf(0, "0x%zx", stack.max_size);
		add_assoc_str(return_value, "max_size", str);

		str = strpprintf(0, "%p", zend_call_stack_position());
		add_assoc_str(return_value, "position", str);

		str = strpprintf(0, "%p", EG(stack_limit));
		add_assoc_str(return_value, "EG(stack_limit)", str);

		return;
	}

	RETURN_NULL();
}

zend_long (*volatile zend_call_stack_use_all_fun)(void *limit);

static zend_long zend_call_stack_use_all(void *limit)
{
	if (zend_call_stack_overflowed(limit)) {
		return 1;
	}

	return 1 + zend_call_stack_use_all_fun(limit);
}

static ZEND_FUNCTION(zend_test_zend_call_stack_use_all)
{
	zend_call_stack stack;

	ZEND_PARSE_PARAMETERS_NONE();

	if (!zend_call_stack_get(&stack)) {
		return;
	}

	zend_call_stack_use_all_fun = zend_call_stack_use_all;

	void *limit = zend_call_stack_limit(stack.base, stack.max_size, 4096);

	RETURN_LONG(zend_call_stack_use_all(limit));
}
#endif /* ZEND_CHECK_STACK_LIMIT */

static ZEND_FUNCTION(zend_get_map_ptr_last)
{
	ZEND_PARSE_PARAMETERS_NONE();
	RETURN_LONG(CG(map_ptr_last));
}

static ZEND_FUNCTION(zend_test_crash)
{
	zend_string *message = NULL;

	ZEND_PARSE_PARAMETERS_START(0, 1)
		Z_PARAM_OPTIONAL
		Z_PARAM_STR_OR_NULL(message)
	ZEND_PARSE_PARAMETERS_END();

	if (message) {
		php_printf("%s", ZSTR_VAL(message));
	}

	char *invalid = (char *) 1;
	php_printf("%s", invalid);
}

static bool has_opline(zend_execute_data *execute_data)
{
	return execute_data
		&& execute_data->func
		&& ZEND_USER_CODE(execute_data->func->type)
		&& execute_data->opline
	;
}

void * zend_test_custom_malloc(size_t len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
	if (has_opline(EG(current_execute_data))) {
		assert(EG(current_execute_data)->opline->lineno != (uint32_t)-1);
	}
	return _zend_mm_alloc(ZT_G(zend_orig_heap), len ZEND_FILE_LINE_EMPTY_CC ZEND_FILE_LINE_EMPTY_CC);
}

void zend_test_custom_free(void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
	if (has_opline(EG(current_execute_data))) {
		assert(EG(current_execute_data)->opline->lineno != (uint32_t)-1);
	}
	_zend_mm_free(ZT_G(zend_orig_heap), ptr ZEND_FILE_LINE_EMPTY_CC ZEND_FILE_LINE_EMPTY_CC);
}

void * zend_test_custom_realloc(void * ptr, size_t len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
	if (has_opline(EG(current_execute_data))) {
		assert(EG(current_execute_data)->opline->lineno != (uint32_t)-1);
	}
	return _zend_mm_realloc(ZT_G(zend_orig_heap), ptr, len ZEND_FILE_LINE_EMPTY_CC ZEND_FILE_LINE_EMPTY_CC);
}

static void zend_test_reset_heap(zend_zend_test_globals *zend_test_globals)
{
	if (zend_test_globals->zend_test_heap) {
		free(zend_test_globals->zend_test_heap);
		zend_test_globals->zend_test_heap = NULL;
		zend_mm_set_heap(zend_test_globals->zend_orig_heap);
	}
}

static PHP_INI_MH(OnUpdateZendTestObserveOplineInZendMM)
{
	if (new_value == NULL) {
		return FAILURE;
	}

	int int_value = zend_ini_parse_bool(new_value);

	if (int_value == 1) {
		// `zend_mm_heap` is a private struct, so we have not way to find the
		// actual size, but 4096 bytes should be enough
		ZT_G(zend_test_heap) = malloc(4096);
		memset(ZT_G(zend_test_heap), 0, 4096);
		zend_mm_set_custom_handlers(
			ZT_G(zend_test_heap),
			zend_test_custom_malloc,
			zend_test_custom_free,
			zend_test_custom_realloc
		);
		ZT_G(zend_orig_heap) = zend_mm_get_heap();
		zend_mm_set_heap(ZT_G(zend_test_heap));
	} else {
		zend_test_reset_heap(ZEND_MODULE_GLOBALS_BULK(zend_test));
	}
	return OnUpdateBool(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}

static ZEND_FUNCTION(zend_test_fill_packed_array)
{
	HashTable *parameter;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_ARRAY_HT_EX(parameter, 0, 1)
	ZEND_PARSE_PARAMETERS_END();

	if (!HT_IS_PACKED(parameter)) {
		zend_argument_value_error(1, "must be a packed array");
		RETURN_THROWS();
	}

	zend_hash_extend(parameter, parameter->nNumUsed + 10, true);
	ZEND_HASH_FILL_PACKED(parameter) {
		for (int i = 0; i < 10; i++) {
			zval value;
			ZVAL_LONG(&value, i);
			ZEND_HASH_FILL_ADD(&value);
		}
	} ZEND_HASH_FILL_END();
}

static ZEND_FUNCTION(get_open_basedir)
{
	ZEND_PARSE_PARAMETERS_NONE();
	if (PG(open_basedir)) {
		RETURN_STRING(PG(open_basedir));
	} else {
		RETURN_NULL();
	}
}

static ZEND_FUNCTION(zend_test_is_pcre_bundled)
{
	ZEND_PARSE_PARAMETERS_NONE();
#ifdef HAVE_BUNDLED_PCRE
	RETURN_TRUE;
#else
	RETURN_FALSE;
#endif
}

#ifdef PHP_WIN32
static ZEND_FUNCTION(zend_test_set_fmode)
{
	bool binary;
	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_BOOL(binary)
	ZEND_PARSE_PARAMETERS_END();

	_fmode = binary ? _O_BINARY : _O_TEXT;
}
#endif

static ZEND_FUNCTION(zend_test_cast_fread)
{
	zval *stream_zv;
	php_stream *stream;
	FILE *fp;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_RESOURCE(stream_zv);
	ZEND_PARSE_PARAMETERS_END();

	php_stream_from_zval(stream, stream_zv);

	if (php_stream_cast(stream, PHP_STREAM_AS_STDIO, (void *) &fp, REPORT_ERRORS) == FAILURE) {
		return;
	}

	size_t size = 10240; /* Must be large enough to trigger the issue */
	char *buf = malloc(size);
	bool bail = false;
	zend_try {
		(void) !fread(buf, 1, size, fp);
	} zend_catch {
		bail = true;
	} zend_end_try();

	free(buf);

	if (bail) {
		zend_bailout();
	}
}

static ZEND_FUNCTION(zend_test_is_zend_ptr)
{
	zend_long addr;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_LONG(addr);
	ZEND_PARSE_PARAMETERS_END();

	RETURN_BOOL(is_zend_ptr((void*)addr));
}

static ZEND_FUNCTION(zend_test_log_err_debug)
{
	zend_string *str;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_STR(str);
	ZEND_PARSE_PARAMETERS_END();

	php_log_err_with_severity(ZSTR_VAL(str), LOG_DEBUG);
}

static zend_object *zend_test_class_new(zend_class_entry *class_type)
{
	zend_object *obj = zend_objects_new(class_type);
	object_properties_init(obj, class_type);
	obj->handlers = &zend_test_class_handlers;
	return obj;
}

static zend_function *zend_test_class_method_get(zend_object **object, zend_string *name, const zval *key)
{
	if (zend_string_equals_literal_ci(name, "test")) {
		zend_internal_function *fptr;

		if (EXPECTED(EG(trampoline).common.function_name == NULL)) {
			fptr = (zend_internal_function *) &EG(trampoline);
		} else {
			fptr = emalloc(sizeof(zend_internal_function));
	    }
		memset(fptr, 0, sizeof(zend_internal_function));
		fptr->type = ZEND_INTERNAL_FUNCTION;
		fptr->num_args = 0;
		fptr->scope = (*object)->ce;
		fptr->fn_flags = ZEND_ACC_CALL_VIA_HANDLER;
		fptr->function_name = zend_string_copy(name);
		fptr->handler = ZEND_FN(zend_test_func);
		fptr->doc_comment = NULL;

		return (zend_function*)fptr;
	}
	return zend_std_get_method(object, name, key);
}

static zend_function *zend_test_class_static_method_get(zend_class_entry *ce, zend_string *name)
{
	if (zend_string_equals_literal_ci(name, "test")) {
		zend_internal_function *fptr;

		if (EXPECTED(EG(trampoline).common.function_name == NULL)) {
			fptr = (zend_internal_function *) &EG(trampoline);
		} else {
			fptr = emalloc(sizeof(zend_internal_function));
		}
		memset(fptr, 0, sizeof(zend_internal_function));
		fptr->type = ZEND_INTERNAL_FUNCTION;
		fptr->num_args = 0;
		fptr->scope = ce;
		fptr->fn_flags = ZEND_ACC_CALL_VIA_HANDLER|ZEND_ACC_STATIC;
		fptr->function_name = zend_string_copy(name);
		fptr->handler = ZEND_FN(zend_test_func);
		fptr->doc_comment = NULL;

		return (zend_function*)fptr;
	}
	return zend_std_get_static_method(ce, name, NULL);
}

void zend_attribute_validate_zendtestattribute(zend_attribute *attr, uint32_t target, zend_class_entry *scope)
{
	if (target != ZEND_ATTRIBUTE_TARGET_CLASS) {
		zend_error(E_COMPILE_ERROR, "Only classes can be marked with #[ZendTestAttribute]");
	}
}

static ZEND_METHOD(_ZendTestClass, __toString)
{
	ZEND_PARSE_PARAMETERS_NONE();
	RETURN_EMPTY_STRING();
}

/* Internal function returns bool, we return int. */
static ZEND_METHOD(_ZendTestClass, is_object)
{
	ZEND_PARSE_PARAMETERS_NONE();
	RETURN_LONG(42);
}

static ZEND_METHOD(_ZendTestClass, returnsStatic) {
	ZEND_PARSE_PARAMETERS_NONE();
	object_init_ex(return_value, zend_get_called_scope(execute_data));
}

static ZEND_METHOD(_ZendTestClass, returnsThrowable)
{
	ZEND_PARSE_PARAMETERS_NONE();
	zend_throw_error(NULL, "Dummy");
}

static ZEND_METHOD(_ZendTestClass, variadicTest) {
	int      argc, i;
	zval    *args = NULL;

	ZEND_PARSE_PARAMETERS_START(0, -1)
		Z_PARAM_VARIADIC('*', args, argc)
	ZEND_PARSE_PARAMETERS_END();

	for (i = 0; i < argc; i++) {
		zval *arg = args + i;

		if (Z_TYPE_P(arg) == IS_STRING) {
			continue;
		}
		if (Z_TYPE_P(arg) == IS_OBJECT && instanceof_function(Z_OBJ_P(arg)->ce, zend_ce_iterator)) {
			continue;
		}

		zend_argument_type_error(i + 1, "must be of class Iterator or a string, %s given", zend_zval_type_name(arg));
		RETURN_THROWS();
	}

	object_init_ex(return_value, zend_get_called_scope(execute_data));
}

static ZEND_METHOD(_ZendTestChildClass, returnsThrowable)
{
	ZEND_PARSE_PARAMETERS_NONE();
	zend_throw_error(NULL, "Dummy");
}

static ZEND_METHOD(ZendAttributeTest, testMethod)
{
	ZEND_PARSE_PARAMETERS_NONE();
	RETURN_TRUE;
}

static ZEND_METHOD(_ZendTestTrait, testMethod)
{
	ZEND_PARSE_PARAMETERS_NONE();
	RETURN_TRUE;