Initialize attributes for internal functions

Fixes a crash in Symfony SecurityBundle tests.

Author: nikic

Zend/tests/attributes/029_reflect_internal_symbols.phpt

@@ -0,0 +1,32 @@
+--TEST--
+Reflect attributes on different kinds of internal symbols
+--FILE--
+<?php
+
+$rf = new ReflectionFunction('unserialize');
+var_dump($rf->getAttributes());
+
+$rc = new ReflectionClass('DateTime');
+var_dump($rc->getAttributes());
+
+$rm = $rc->getMethod('__construct');
+var_dump($rm->getAttributes());
+
+$rcc = $rc->getReflectionConstant('ATOM');
+var_dump($rcc->getAttributes());
+
+$rp = new ReflectionProperty('Exception', 'message');
+var_dump($rp->getAttributes());
+
+?>
+--EXPECT--
+array(0) {
+}
+array(0) {
+}
+array(0) {
+}
+array(0) {
+}
+array(0) {
+}

Zend/zend_API.c

@@ -2325,6 +2325,7 @@ ZEND_API zend_result zend_register_functions(zend_class_entry *scope, const zend
 		internal_function->function_name = zend_string_init_interned(ptr->fname, fname_len, 1);
 		internal_function->scope = scope;
 		internal_function->prototype = NULL;
+		internal_function->attributes = NULL;
 		if (ptr->flags) {
 			if (!(ptr->flags & ZEND_ACC_PPP_MASK)) {
 				if (ptr->flags != ZEND_ACC_DEPRECATED && scope) {