From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Wed, 9 Mar 2011 03:02:28 +0000 (+0000)
Subject: c-index-test.c: Fix cygwin warning not to pass signed char to islower(c).
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6d5552131a4637f9bbe8c93386648e9bbb2c30fe;p=clang

c-index-test.c: Fix cygwin warning not to pass signed char to islower(c).

Cygwin's ctype.h says;
/* These macros are intentionally written in a manner that will trigger
   a gcc -Wall warning if the user mistakenly passes a 'char' instead
   of an int containing an 'unsigned char'.
   (snip) */

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127308 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/tools/c-index-test/c-index-test.c b/tools/c-index-test/c-index-test.c
index d4e567d9e2..d424e2453a 100644
--- a/tools/c-index-test/c-index-test.c
+++ b/tools/c-index-test/c-index-test.c
@@ -990,7 +990,7 @@ void print_completion_result(CXCompletionResult *completion_result,
 
 int my_stricmp(const char *s1, const char *s2) {
   while (*s1 && *s2) {
-    int c1 = tolower(*s1), c2 = tolower(*s2);
+    int c1 = tolower((unsigned char)*s1), c2 = tolower((unsigned char)*s2);
     if (c1 < c2)
       return -1;
     else if (c1 > c2)