1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/saved-stacks/bug-1509420.js b/js/src/jit-test/tests/saved-stacks/bug-1509420.js
new file mode 100644
index 0000000000..87cd0b7f21
--- /dev/null
+++ b/js/src/jit-test/tests/saved-stacks/bug-1509420.js
@@ -0,0 +1,9 @@
+// bindtoAsyncStack shouldn't choke on CCWs of functions.
+
+var g = newGlobal();
+g.evaluate("function h() {}");
+bindToAsyncStack(g.h, { stack: saveStack() })();
+
+bindToAsyncStack(new Proxy(() => {}, { apply: () => {} }),
+                 { stack: saveStack() })
+();