1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/onEnterFrame-async-resumption-04.js b/js/src/jit-test/tests/debug/onEnterFrame-async-resumption-04.js
new file mode 100644
index 0000000000..9f67d1f286
--- /dev/null
+++ b/js/src/jit-test/tests/debug/onEnterFrame-async-resumption-04.js
@@ -0,0 +1,36 @@
+// Returning {throw:} from onEnterFrame when resuming inside a try block in an
+// async function causes control to jump to the catch block.
+
+let g = newGlobal({newCompartment: true});
+g.eval(`
+    async function af() {
+        try {
+            return await Promise.resolve("fail");
+        } catch (exc) {
+            assertEq(exc, "fit");
+            return "ok";
+        }
+    }
+`)
+
+let dbg = new Debugger(g);
+dbg.onEnterFrame = frame => {
+    if (!("hits" in frame)) {
+        frame.hits = 1;
+    } else if (++frame.hits === 2) {
+        // First hit happens when g.af() is called;
+        // second hit is resuming at the `await` inside the try block.
+        return {throw: "fit"};
+    }
+};
+
+let p = g.af();
+let hits = 0;
+p.then(value => {
+    result = value;
+    hits++;
+});
+drainJobQueue();
+assertEq(hits, 1);
+assertEq(result, "ok");
+