Ensure that inner classes do not inherit the parent's class HAS_SUPER flag. (#2669)

This patch fixes #2667.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu

Author: rerobika

jerry-core/parser/js/js-parser-expr.c

@@ -560,6 +560,8 @@ parser_parse_class (parser_context_t *context_p, /**< context */
 {
   JERRY_ASSERT (context_p->token.type == LEXER_KEYW_CLASS);
 
+  context_p->status_flags &= (uint32_t) ~PARSER_CLASS_HAS_SUPER;
+
   uint16_t class_ident_index = PARSER_MAXIMUM_NUMBER_OF_LITERALS;
 
   if (is_statement)

tests/jerry/es2015/regression-test-issue-2667.js

@@ -0,0 +1,20 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+try {
+  eval ("new Strin = class extends f ()() { constructor () { var C = class extends$B {}");
+  assert (false);
+} catch (e) {
+  assert (e instanceof SyntaxError);
+}