Fixes #1404

src/debuggability.js

@@ -39,7 +39,10 @@ Promise.prototype.suppressUnhandledRejections = function() {
 Promise.prototype._ensurePossibleRejectionHandled = function () {
     if ((this._bitField & IS_REJECTION_IGNORED) !== 0) return;
     this._setRejectionIsUnhandled();
-    async.invokeLater(this._notifyUnhandledRejection, this, undefined);
+    var self = this;
+    setTimeout(function() {
+        self._notifyUnhandledRejection();
+    }, 1);
 };
 
 Promise.prototype._notifyUnhandledRejectionIsHandled = function () {

test/mocha/unhandled_rejections.js

@@ -752,3 +752,25 @@ describe("Unhandled rejection when joining chains with common rejected parent",
          return Promise.all([test1, test2]);
     });
 });
+
+var asyncAwaitSupported = (function() {
+    try {
+        new Function("async function abc() {}");
+        return true;
+    } catch (e) {
+        return false;
+    }
+})();
+
+if (asyncAwaitSupported) {
+    describe("No unhandled rejection from async await", function () {
+        setupCleanUps();
+        specify("gh-1404", function testFunction() {
+            var ret = onUnhandledFail(testFunction);
+            Promise.using(Promise.resolve(),
+                (new Function("Bluebird", "return async function() { await Bluebird.reject(new Error('foo')); }"))(Promise))
+            .caught(function() {});
+            return ret;
+        });
+    });
+}