From 48a7afa5a1d60cd415fce313fc39e0aa739c79b3 Mon Sep 17 00:00:00 2001
From: David Chisnall <csdavec@swan.ac.uk>
Date: Tue, 22 May 2018 10:13:17 +0000
Subject: [objc-gnustep2] Use unsigned char to avoid potential UB in isalnum.

Suggested by Gabor Buella.

llvm-svn: 332966
---
 clang/lib/CodeGen/CGObjCGNU.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'clang')

diff --git a/clang/lib/CodeGen/CGObjCGNU.cpp b/clang/lib/CodeGen/CGObjCGNU.cpp
index 1c1abe90c61..6a0554b46b1 100644
--- a/clang/lib/CodeGen/CGObjCGNU.cpp
+++ b/clang/lib/CodeGen/CGObjCGNU.cpp
@@ -1053,7 +1053,7 @@ class CGObjCGNUstep2 : public CGObjCGNUstep {
     if (isNamed) {
       StringName = ".objc_str_";
       for (int i=0,e=Str.size() ; i<e ; ++i) {
-        char c = Str[i];
+        unsigned char c = Str[i];
         if (isalnum(c))
           StringName += c;
         else if (c == ' ')
-- 
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