1 files changed, 21 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/class-07.js b/js/src/jit-test/tests/debug/class-07.js
new file mode 100644
index 0000000000..a6a69cb79f
--- /dev/null
+++ b/js/src/jit-test/tests/debug/class-07.js
@@ -0,0 +1,21 @@
+// |jit-test| error: ReferenceError
+
+let g = newGlobal({newCompartment: true});
+let dbg = Debugger(g);
+
+let forceException = g.eval(`
+    (class extends class {} {
+        // Calling this will return a primitive immediately.
+        constructor() { return {}; }
+    })
+`);
+
+dbg.onEnterFrame = function() {
+    return {
+        // Force the return undefined, which will throw for returning
+        // while |this| is still undefined.
+        return: undefined
+    }
+}
+print("break here");
+new forceException;