From deccef1d94af33b6fa29f94d224f58f5c3bf2be3 Mon Sep 17 00:00:00 2001
From: Adlai Holler <guy.on.internet@icloud.com>
Date: Mon, 22 Feb 2016 09:04:01 -0800
Subject: [PATCH] [ASDisplayNode] Lock during
 constrainedSizeForCalculatedLayout

---
 AsyncDisplayKit/ASDisplayNode.mm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/AsyncDisplayKit/ASDisplayNode.mm b/AsyncDisplayKit/ASDisplayNode.mm
index 4d46d80681..44c353b6c4 100644
--- a/AsyncDisplayKit/ASDisplayNode.mm
+++ b/AsyncDisplayKit/ASDisplayNode.mm
@@ -1908,6 +1908,7 @@ void recursivelyTriggerDisplayForLayer(CALayer *layer, BOOL shouldBlock)
 
 - (ASSizeRange)constrainedSizeForCalculatedLayout
 {
+  ASDN::MutexLocker l(_propertyLock);
   return _constrainedSize;
 }