From: Zhongxing Xu <xuzhongxing@gmail.com>
Date: Mon, 24 Nov 2008 02:30:48 +0000 (+0000)
Subject: Add a comment about the signedness.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d0fd3b747c46211c481021ffb9cabd5635f918ed;p=clang

Add a comment about the signedness.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59932 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/RegionStore.cpp b/lib/Analysis/RegionStore.cpp
index cdc8b2723d..73b25955c1 100644
--- a/lib/Analysis/RegionStore.cpp
+++ b/lib/Analysis/RegionStore.cpp
@@ -273,6 +273,8 @@ SVal RegionStoreManager::getSizeInElements(const GRState* St,
 
   if (const StringRegion* SR = dyn_cast<StringRegion>(R)) {
     const StringLiteral* Str = SR->getStringLiteral();
+    // We intentionally made the size value signed because it participates in 
+    // operations with signed indices.
     return NonLoc::MakeVal(getBasicVals(), Str->getByteLength(), false);
   }