From de115e20009c49dc3ded7465b84d4535ba24f08d Mon Sep 17 00:00:00 2001
From: ricky <ricky@pinterest.com>
Date: Mon, 5 Apr 2021 19:51:41 -0700
Subject: [PATCH] [ASTextNode2] Check that rangeOut is non-nil before
 dereferencing (#1980)

rangeOut is a nullable parameter, but we are treating it as though it is always not null. Make sure it is not null before dereferencing it.
---
 Source/ASTextNode2.mm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Source/ASTextNode2.mm b/Source/ASTextNode2.mm
index 6c5e53b4..0efe7a63 100644
--- a/Source/ASTextNode2.mm
+++ b/Source/ASTextNode2.mm
@@ -702,7 +702,9 @@ static NSArray *DefaultLinkAttributeNames() {
         continue;
       }
 
-      *rangeOut = NSIntersectionRange(visibleRange, effectiveRange);
+      if (rangeOut != NULL) {
+        *rangeOut = NSIntersectionRange(visibleRange, effectiveRange);
+      }
 
       if (attributeNameOut != NULL) {
         *attributeNameOut = attributeName;