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 cdc8b27..73b2595 100644
--- a/lib/Analysis/RegionStore.cpp
+++ b/lib/Analysis/RegionStore.cpp
@@ -273,6 +273,8 @@
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);
}