X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fstrcasecmp.c;h=c1bac0a5af93d60d1228aaf45d9cf8beb7a45ab6;hb=8de557e31178699dd6e839850056f0653cdfba89;hp=71f2eca7c94ca872e8a3100fb4e4d8de44fce245;hpb=40cdb9bf18ec808d500182c3ab071f3129861f95;p=gnulib.git

diff --git a/lib/strcasecmp.c b/lib/strcasecmp.c
index 71f2eca7c..c1bac0a5a 100644
--- a/lib/strcasecmp.c
+++ b/lib/strcasecmp.c
@@ -25,6 +25,7 @@
 #include "strcase.h"
 
 #include <ctype.h>
+#include <limits.h>
 
 #if HAVE_MBRTOWC
 # include "mbuiter.h"
@@ -93,6 +94,12 @@ strcasecmp (const char *s1, const char *s2)
 	}
       while (c1 == c2);
 
-      return c1 - c2;
+      if (UCHAR_MAX <= INT_MAX)
+	return c1 - c2;
+      else
+	/* On machines where 'char' and 'int' are types of the same size, the
+	   difference of two 'unsigned char' values - including the sign bit -
+	   doesn't fit in an 'int'.  */
+	return (c1 > c2 ? 1 : c1 < c2 ? -1 : 0);
     }
 }