Ensure that symbol properties are not listed in ecma_builtin_list_lazy_property_names (#2734)

This patch fixes #2733.

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

jerry-core/ecma/builtin-objects/ecma-builtins.c

@@ -943,6 +943,15 @@ ecma_builtin_list_lazy_property_names (ecma_object_t *object_p, /**< a built-in
         index = 0;
       }
 
+#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
+      /* Builtin symbol properties are internal magic strings which must not be listed */
+      if (curr_property_p->magic_string_id > LIT_NON_INTERNAL_MAGIC_STRING__COUNT)
+      {
+        curr_property_p++;
+        continue;
+      }
+#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
+
       ecma_string_t *name_p = ecma_get_magic_string ((lit_magic_string_id_t) curr_property_p->magic_string_id);
 
       uint32_t bit_for_index = (uint32_t) 1u << index;

tests/jerry/es2015/regression-test-issue-2733.js

@@ -0,0 +1,49 @@
+// 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.
+
+var recursion_counter = 0;
+var recursion_limit = 1000;
+var fz_globalObject = this
+
+function fz_is_primitive(value) {
+    var value_type = typeof value
+    if (value_type !== "function" && value_type !== "object")
+        return value_type
+}
+
+function fz_starts_with(str, pattern) {
+    for (var i = 0; i < pattern.length; i++)
+        if (str[i] !== pattern[i])
+            return
+    return true
+}
+
+function fz_collect_values(value) {
+    if (++recursion_counter >= recursion_limit) {
+      return
+    }
+
+    var primitive = fz_is_primitive(value)
+    if (primitive)
+        return
+    var prop_names = Object.getOwnPropertyNames(value)
+    for (var i = 0; i < prop_names.length; i++) {
+        var prop_name = prop_names[i]
+        if (!fz_starts_with(prop_name, "fz_")) {
+            fz_collect_values(value[prop_name])
+        }
+    }
+}
+
+fz_collect_values(fz_globalObject)