X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstring%2Fstrcmp.c;h=639fc10259c24a6bd3eec3d24b59ec0e4420c203;hb=d865c4403fc91d1f1ac95ba76febcee9f429bb97;hp=42ed51c01c86d5b96a9a62270d35015185694179;hpb=b08f4b52b1cd1f7a9553c0f357a7c90859fa3e73;p=pdclib

diff --git a/functions/string/strcmp.c b/functions/string/strcmp.c
index 42ed51c..639fc10 100644
--- a/functions/string/strcmp.c
+++ b/functions/string/strcmp.c
@@ -1,5 +1,3 @@
-/* $Id$ */
-
 /* strcmp( const char *, const char * )
 
    This file is part of the Public Domain C Library (PDCLib).
@@ -17,23 +15,27 @@ int strcmp( const char * s1, const char * s2 )
         ++s1;
         ++s2;
     }
-    return ( *s1 - *s2 );
+    return ( *(unsigned char *)s1 - *(unsigned char *)s2 );
 }
 
 #endif
 
 #ifdef TEST
-#include <_PDCLIB_test.h>
+
+#include "_PDCLIB_test.h"
 
 int main( void )
 {
     char cmpabcde[] = "abcde";
+    char cmpabcd_[] = "abcd\xfc";
     char empty[] = "";
     TESTCASE( strcmp( abcde, cmpabcde ) == 0 );
     TESTCASE( strcmp( abcde, abcdx ) < 0 );
     TESTCASE( strcmp( abcdx, abcde ) > 0 );
     TESTCASE( strcmp( empty, abcde ) < 0 );
     TESTCASE( strcmp( abcde, empty ) > 0 );
+    TESTCASE( strcmp( abcde, cmpabcd_ ) < 0 );
     return TEST_RESULTS;
 }
+
 #endif