1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/jsatom.cpp b/js/src/jsatom.cpp
index 02308314c9..2a72ac38a3 100644
--- a/js/src/jsatom.cpp
+++ b/js/src/jsatom.cpp
@@ -28,6 +28,8 @@
 
 #include "vm/String-inl.h"
 
+#include "vm/BigIntType.h"
+
 using namespace js;
 using namespace js::gc;
 
@@ -484,6 +486,13 @@ ToAtomSlow(ExclusiveContext* cx, typename MaybeRooted<Value, allowGC>::HandleTyp
         }
         return nullptr;
     }
+    if (v.isBigInt()) {
+        RootedBigInt i(cx, v.toBigInt());
+        JSAtom* atom = BigIntToAtom(cx, i);
+        if (!allowGC && !atom)
+            cx->recoverFromOutOfMemory();
+        return atom;
+    }
     MOZ_ASSERT(v.isUndefined());
     return cx->names().undefined;
 }