1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/promise/bug1406463.js b/js/src/jit-test/tests/promise/bug1406463.js
new file mode 100644
index 0000000000..4873da395f
--- /dev/null
+++ b/js/src/jit-test/tests/promise/bug1406463.js
@@ -0,0 +1,16 @@
+// |jit-test| error:dead object
+
+var P = newGlobal({newCompartment: true}).eval(`
+(class extends Promise {
+    static resolve(o) {
+        return o;
+    }
+});
+`);
+
+Promise.all.call(P, [{
+    then(r) {
+        nukeAllCCWs();
+        r();
+    }
+}]);