Add test function arguments

Zend/tests/return_types/internal_functions001.phpt

@@ -0,0 +1,15 @@
+--TEST--
+Return type hinting for internal functions
+
+--SKIPIF--
+<?php
+if (!function_exists('zend_test_func')) {
+    print 'skip';
+}
+
+--FILE--
+<?php
+zend_test_func();
+?>
+--EXPECTF--
+Catchable fatal error: Return value of zend_test_func() must be of the type array, null returned in %s on line %d

Zend/tests/return_types/internal_functions002.phpt

@@ -0,0 +1,16 @@
+--TEST--
+Return type hinting for internal functions 2
+
+--SKIPIF--
+<?php
+if (!function_exists('zend_test_func2')) {
+    print 'skip';
+}
+
+--FILE--
+<?php
+zend_test_func2();
+echo "==DONE==\n"
+?>
+--EXPECTF--
+==DONE==

Zend/zend_builtin_functions.c

@@ -87,6 +87,7 @@ static ZEND_FUNCTION(debug_backtrace);
 static ZEND_FUNCTION(debug_print_backtrace);
 #if ZEND_DEBUG
 static ZEND_FUNCTION(zend_test_func);
+static ZEND_FUNCTION(zend_test_func2);
 #ifdef ZTS
 static ZEND_FUNCTION(zend_thread_id);
 #endif
@@ -243,6 +244,14 @@ ZEND_END_ARG_INFO()
 ZEND_BEGIN_ARG_INFO_EX(arginfo_extension_loaded, 0, 0, 1)
 	ZEND_ARG_INFO(0, extension_name)
 ZEND_END_ARG_INFO()
+
+#ifdef ZEND_DEBUG
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO(arginfo_zend_test_func, IS_ARRAY, NULL, 0)
+ZEND_END_ARG_INFO()
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO(arginfo_zend_test_func2, IS_ARRAY, NULL, 1)
+ZEND_END_ARG_INFO()
+#endif
+
 /* }}} */
 
 static const zend_function_entry builtin_functions[] = { /* {{{ */
@@ -304,7 +313,8 @@ static const zend_function_entry builtin_functions[] = { /* {{{ */
 	ZEND_FE(debug_backtrace, 		arginfo_debug_backtrace)
 	ZEND_FE(debug_print_backtrace, 		arginfo_debug_print_backtrace)
 #if ZEND_DEBUG
-	ZEND_FE(zend_test_func,		NULL)
+	ZEND_FE(zend_test_func,		arginfo_zend_test_func)
+	ZEND_FE(zend_test_func2,	arginfo_zend_test_func2)
 #ifdef ZTS
 	ZEND_FE(zend_thread_id,		NULL)
 #endif
@@ -1954,6 +1964,13 @@ ZEND_FUNCTION(zend_test_func)
 	zend_get_parameters(ZEND_NUM_ARGS(), 2, &arg1, &arg2);
 }
 
+ZEND_FUNCTION(zend_test_func2)
+{
+	zval *arg1, *arg2;
+
+	zend_get_parameters(ZEND_NUM_ARGS(), 2, &arg1, &arg2);
+}
+
 
 #ifdef ZTS
 ZEND_FUNCTION(zend_thread_id)