From: Paul Eggert <eggert@cs.ucla.edu>
Date: Tue, 31 Oct 2000 06:02:53 +0000 (+0000)
Subject: (FOLD): Do not assume that characters are unsigned.
X-Git-Url: https://git.dogcows.com/gitweb?a=commitdiff_plain;h=731cf2666a2f26b5ccfbe67144f83bc237750e57;p=chaz%2Ftar

(FOLD): Do not assume that characters are unsigned.
---

diff --git a/lib/fnmatch.c b/lib/fnmatch.c
index 90930e4..ce55c7f 100644
--- a/lib/fnmatch.c
+++ b/lib/fnmatch.c
@@ -61,7 +61,9 @@ fnmatch (const char *pattern, const char *string, int flags)
   register char c;
 
 /* Note that this evaluates C many times.  */
-# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
+# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER ((unsigned char) (c)) \
+                  ? tolower ((unsigned char) (c)) \
+                  : (c))
 
   while ((c = *p++) != '\0')
     {