From df10f8f19a416cd367e8761783538ae1dfe460f6 Mon Sep 17 00:00:00 2001
From: Scott Goodson <scottg@pinterest.com>
Date: Thu, 14 Jan 2016 00:25:53 -0800
Subject: [PATCH] Check array size before accessing section - rare crash for
 improper data source use, de-escalated to messaging nil.

---
 AsyncDisplayKit/Details/ASDataController.mm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/AsyncDisplayKit/Details/ASDataController.mm b/AsyncDisplayKit/Details/ASDataController.mm
index bcc98f4768..53b3715874 100644
--- a/AsyncDisplayKit/Details/ASDataController.mm
+++ b/AsyncDisplayKit/Details/ASDataController.mm
@@ -900,7 +900,8 @@ static void *kASSizingQueueContext = &kASSizingQueueContext;
 - (NSUInteger)numberOfRowsInSection:(NSUInteger)section
 {
   ASDisplayNodeAssertMainThread();
-  return [[self completedNodes][section] count];
+  NSArray *completedNodes = [self completedNodes];
+  return (section < completedNodes.count) ? [completedNodes[section] count] : 0;
 }
 
 - (ASCellNode *)nodeAtIndexPath:(NSIndexPath *)indexPath