Fix parsing of invalid asterix symbol after private field symbol

Raise syntax error instead of crashing.

JerryScript-DCO-1.0-Signed-off-by: Ádám Kulcsár kuladam@inf.u-szeged.hu

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

@@ -689,7 +689,7 @@ parser_parse_class_body (parser_context_t *context_p, /**< context */
         is_private = true;
       }
 
-      if (!lexer_consume_generator (context_p))
+      if (is_private || !lexer_consume_generator (context_p))
       {
         lexer_expect_object_literal_id (context_p, ident_opts);
       }

tests/jerry/fail/regression-test-issue-5153.js

@@ -0,0 +1,15 @@
+// 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.
+
+class C { async #*method()  }