1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/onExceptionUnwind-05.js b/js/src/jit-test/tests/debug/onExceptionUnwind-05.js
new file mode 100644
index 0000000000..6138e89634
--- /dev/null
+++ b/js/src/jit-test/tests/debug/onExceptionUnwind-05.js
@@ -0,0 +1,12 @@
+// onExceptionUnwind returning undefined does not affect the thrown exception.
+
+var g = newGlobal({newCompartment: true});
+g.parent = this;
+g.eval("new Debugger(parent).onExceptionUnwind = function () {};");
+
+var obj = new Error("oops");
+try {
+    throw obj;
+} catch (exc) {
+    assertEq(exc, obj);
+}