Mark the lexical environments of running executable objects (#4133)

Fixes #4094.

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai daniel.batyai@h-lab.eu

jerry-core/ecma/base/ecma-gc.c

@@ -425,6 +425,8 @@ ecma_gc_mark_executable_object (ecma_object_t *object_p) /**< object */
     }
   }
 
+  ecma_gc_set_object_visited (executable_object_p->frame_ctx.lex_env_p);
+
   if (!ECMA_EXECUTABLE_OBJECT_IS_SUSPENDED (executable_object_p->extended_object.u.class_prop.extra_info))
   {
     /* All objects referenced by running executable objects are strong roots,
@@ -432,8 +434,6 @@ ecma_gc_mark_executable_object (ecma_object_t *object_p) /**< object */
     return;
   }
 
-  ecma_gc_set_object_visited (executable_object_p->frame_ctx.lex_env_p);
-
   if (ecma_is_value_object (executable_object_p->frame_ctx.this_binding))
   {
     ecma_gc_set_object_visited (ecma_get_object_from_value (executable_object_p->frame_ctx.this_binding));

tests/jerry/es.next/regression-test-issue-4094.js

@@ -0,0 +1,25 @@
+// 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.
+
+function f() {
+  var o1 = {e:[]};
+  var o2 = o1;
+
+  async function g(a,b) {
+      await b;
+      o2 = 13.37;
+  }
+  g("a");
+}
+f();