From 5d3bd93101f24ff5149fcc0bf494f22dc7a18da2 Mon Sep 17 00:00:00 2001
From: George Burgess IV <george.burgess.iv@gmail.com>
Date: Thu, 16 Jun 2016 02:30:33 +0000
Subject: [PATCH] [Lex] Try to fix a 'comparison is always false' warning. NFC.

llvm-svn: 272867
---
 clang/lib/Lex/PPDirectives.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Lex/PPDirectives.cpp b/clang/lib/Lex/PPDirectives.cpp
index 7c7c8f2a186d..77f118fd3ccb 100644
--- a/clang/lib/Lex/PPDirectives.cpp
+++ b/clang/lib/Lex/PPDirectives.cpp
@@ -162,7 +162,7 @@ static bool warnByDefaultOnWrongCase(StringRef Include) {
   SmallString<32> LowerInclude{Include};
   for (char &Ch : LowerInclude) {
     // In the ASCII range?
-    if (Ch < 0 || Ch > 0x7f)
+    if (static_cast<unsigned char>(Ch) > 0x7f)
       return false; // Can't be a standard header
     // ASCII lowercase:
     if (Ch >= 'A' && Ch <= 'Z')