From 298357f76027ad346546de363927f957aa4871f2 Mon Sep 17 00:00:00 2001
From: Bob Weinand <bobwei9@hotmail.com>
Date: Sat, 13 Jun 2015 18:37:04 +0200
Subject: [PATCH] =?UTF-8?q?We=20need=20to=20check=20for=20Generator::getRe?=
 =?UTF-8?q?turn()=20in=20=E2=89=A5=20PHP=207?=
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---
 lib/functions.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/functions.php b/lib/functions.php
index 85ba927..5347677 100644
--- a/lib/functions.php
+++ b/lib/functions.php
@@ -563,7 +563,13 @@ function resolve(\Generator $generator, Reactor $reactor = null, callable $promi
 function __coroutineAdvance($cs) {
     try {
         if (!$cs->generator->valid()) {
-            $cs->promisor->succeed($cs->returnValue);
+            if (isset($cs->returnValue)) {
+                $cs->promisor->succeed($cs->returnValue);
+            } elseif (PHP_MAJOR_VERSION >= 7) {
+                $cs->promisor->succeed($cs->generator->getReturn());
+            } else {
+                $cs->promisor->succeed(null);
+            }
             return;
         }
         $yielded = $cs->generator->current();