Fix UNKNOWN default values in ext/spl

Author: kocsismate

ext/spl/php_spl.c

@@ -310,12 +310,16 @@ PHP_FUNCTION(spl_autoload)
 {
 	int pos_len, pos1_len;
 	char *pos, *pos1;
-	zend_string *class_name, *lc_name, *file_exts = SPL_G(autoload_extensions);
+	zend_string *class_name, *lc_name, *file_exts = NULL;
 
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|S", &class_name, &file_exts) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|S!", &class_name, &file_exts) == FAILURE) {
 		RETURN_THROWS();
 	}
 
+	if (!file_exts) {
+		file_exts = SPL_G(autoload_extensions);
+	}
+
 	if (file_exts == NULL) { /* autoload_extensions is not initialized, set to defaults */
 		pos = SPL_DEFAULT_FILE_EXTENSIONS;
 		pos_len = sizeof(SPL_DEFAULT_FILE_EXTENSIONS) - 1;
@@ -347,9 +351,10 @@ PHP_FUNCTION(spl_autoload_extensions)
 {
 	zend_string *file_exts = NULL;
 
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S", &file_exts) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S!", &file_exts) == FAILURE) {
 		RETURN_THROWS();
 	}
+
 	if (file_exts) {
 		if (SPL_G(autoload_extensions)) {
 			zend_string_release_ex(SPL_G(autoload_extensions), 0);
@@ -513,11 +518,11 @@ PHP_FUNCTION(spl_autoload_register)
 	zend_object *obj_ptr;
 	zend_fcall_info_cache fcc;
 
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|zbb", &zcallable, &do_throw, &prepend) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|z!bb", &zcallable, &do_throw, &prepend) == FAILURE) {
 		RETURN_THROWS();
 	}
 
-	if (ZEND_NUM_ARGS()) {
+	if (zcallable) {
 		if (!zend_is_callable_ex(zcallable, NULL, 0, &func_name, &fcc, &error)) {
 			alfi.ce = fcc.calling_scope;
 			alfi.func_ptr = fcc.function_handler;

ext/spl/php_spl.stub.php

@@ -8,16 +8,16 @@ function class_parents($instance, bool $autoload = true): array|false {}
 
 function class_uses($what, bool $autoload = true): array|false {}
 
-function spl_autoload(string $class_name, string $file_extensions = UNKNOWN): void {}
+function spl_autoload(string $class_name, ?string $file_extensions = null): void {}
 
 // This silently ignores non-string class names
 function spl_autoload_call($class_name): void {}
 
-function spl_autoload_extensions(string $file_extensions = UNKNOWN): string {}
+function spl_autoload_extensions(?string $file_extensions = null): string {}
 
 function spl_autoload_functions(): array|false {}
 
-function spl_autoload_register($autoload_function = UNKNOWN, bool $throw = true, bool $prepend = false): bool {}
+function spl_autoload_register($autoload_function = null, bool $throw = true, bool $prepend = false): bool {}
 
 function spl_autoload_unregister($autoload_function): bool {}
 

ext/spl/php_spl_arginfo.h

@@ -14,22 +14,22 @@ ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_spl_autoload, 0, 1, IS_VOID, 0)
 	ZEND_ARG_TYPE_INFO(0, class_name, IS_STRING, 0)
-	ZEND_ARG_TYPE_INFO(0, file_extensions, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, file_extensions, IS_STRING, 1, "null")
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_spl_autoload_call, 0, 1, IS_VOID, 0)
 	ZEND_ARG_INFO(0, class_name)
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_spl_autoload_extensions, 0, 0, IS_STRING, 0)
-	ZEND_ARG_TYPE_INFO(0, file_extensions, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, file_extensions, IS_STRING, 1, "null")
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_spl_autoload_functions, 0, 0, MAY_BE_ARRAY|MAY_BE_FALSE)
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_spl_autoload_register, 0, 0, _IS_BOOL, 0)
-	ZEND_ARG_INFO(0, autoload_function)
+	ZEND_ARG_INFO_WITH_DEFAULT_VALUE(0, autoload_function, "null")
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, throw, _IS_BOOL, 0, "true")
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, prepend, _IS_BOOL, 0, "false")
 ZEND_END_ARG_INFO()