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-rw-r--r--js/src/vm/ObjectGroup.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/js/src/vm/ObjectGroup.cpp b/js/src/vm/ObjectGroup.cpp
index ec0a7aec19..91070b3f6b 100644
--- a/js/src/vm/ObjectGroup.cpp
+++ b/js/src/vm/ObjectGroup.cpp
@@ -184,7 +184,7 @@ ObjectGroup::useSingletonForNewObject(JSContext* cx, JSScript* script, jsbytecod
* Sub2 lets us continue to distinguish the two subclasses and any extra
* properties added to those prototype objects.
*/
- if (script->isGenerator())
+ if (script->isStarGenerator() || script->isLegacyGenerator() || script->isAsync())
return false;
if (JSOp(*pc) != JSOP_NEW)
return false;