1 files changed, 4 insertions, 0 deletions
diff --git a/js/src/jsfun.h b/js/src/jsfun.h
index f3643f1e63..234169507d 100644
--- a/js/src/jsfun.h
+++ b/js/src/jsfun.h
@@ -585,6 +585,10 @@ class JSFunction : public js::NativeObject
         return offsetof(JSFunction, u.nativeOrScript);
     }
 
+    static unsigned offsetOfJitInfo() {
+        return offsetof(JSFunction, u.n.jitinfo);
+    }
+
     inline void trace(JSTracer* trc);
 
     /* Bound function accessors. */