From: Zhongxing Xu <xuzhongxing@gmail.com>
Date: Tue, 16 Sep 2008 07:58:21 +0000 (+0000)
Subject: Fixed an offset calculation error.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3f61c18dd765c27bf900b22dc3a5f2a68e2364a1;p=clang

Fixed an offset calculation error.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56242 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Rewrite/RewriteRope.cpp b/lib/Rewrite/RewriteRope.cpp
index 0a4dc85968..61cb02b9a5 100644
--- a/lib/Rewrite/RewriteRope.cpp
+++ b/lib/Rewrite/RewriteRope.cpp
@@ -792,7 +792,7 @@ RopePiece RewriteRope::MakeRopeString(const char *Start, const char *End) {
   if (AllocBuffer && --AllocBuffer->RefCount == 0)
     delete [] (char*)AllocBuffer;
   
-  unsigned AllocSize = sizeof(RopeRefCountString)-1+AllocChunkSize;
+  unsigned AllocSize = offsetof(RopeRefCountString, Data) + AllocChunkSize;
   AllocBuffer = reinterpret_cast<RopeRefCountString *>(new char[AllocSize]);
   AllocBuffer->RefCount = 0;
   memcpy(AllocBuffer->Data, Start, Len);