Fix phpGH-16266: _ZendTestClass::test() segfaults on named parameter

We need to assign the proper number of arguments.

Closes phpGH-16271.

Author: cmb69

ext/zend_test/test.c

@@ -659,7 +659,7 @@ static zend_function *zend_test_class_method_get(zend_object **object, zend_stri
 	    }
 	    memset(fptr, 0, sizeof(zend_internal_function));
 	    fptr->type = ZEND_INTERNAL_FUNCTION;
-	    fptr->num_args = 1;
+	    fptr->num_args = 0;
 	    fptr->scope = (*object)->ce;
 	    fptr->fn_flags = ZEND_ACC_CALL_VIA_HANDLER;
 	    fptr->function_name = zend_string_copy(name);
@@ -682,7 +682,7 @@ static zend_function *zend_test_class_static_method_get(zend_class_entry *ce, ze
 		}
 		memset(fptr, 0, sizeof(zend_internal_function));
 		fptr->type = ZEND_INTERNAL_FUNCTION;
-		fptr->num_args = 1;
+		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);

ext/zend_test/tests/gh16266.phpt

@@ -0,0 +1,21 @@
+--TEST--
+GH-16266 (_ZendTestClass::test() segfaults on named parameter)
+--EXTENSIONS--
+zend_test
+--FILE--
+<?php
+try {
+    $o = new _ZendTestClass();
+    $o->test('a', 'b', c: 'c');
+} catch (Error $e) {
+    echo $e->getMessage(), "\n";
+}
+try {
+    _ZendTestClass::test('a', 'b', c: 'c');
+} catch (Error $e) {
+    echo $e->getMessage(), "\n";
+}
+?>
+--EXPECT--
+Unknown named parameter $c
+Unknown named parameter $c