--- a/js/src/jstracer.cpp
+++ b/js/src/jstracer.cpp
@@ -1653,17 +1653,17 @@ js_ContinueRecording(JSContext* cx, Trac
         }
         AUDIT(traceCompleted);
         r->closeLoop(fragmento);
         js_DeleteRecorder(cx);
         return false; /* done recording */
     }
     /* does this branch go to an inner loop? */
     Fragment* f = fragmento->getLoop(cx->fp->regs->pc);
-    if (nesting_enabled && f->code()) {
+    if (nesting_enabled && f->code() && !((TreeInfo*)f->vmprivate)->globalSlots.length()) {
         JS_ASSERT(f->vmprivate);
         /* call the inner tree */
         GuardRecord* lr = js_ExecuteTree(cx, f, inlineCallCount);
         if (!lr) {
             js_AbortRecording(cx, oldpc, "Couldn't call inner tree");
             return false;
         }
         switch (lr->exit->exitType) {