$NetBSD: patch-ba,v 1.2 2009/12/18 01:09:23 abs Exp $

--- src/common/parsedate.y.orig	2000-10-18 21:53:57.000000000 +0000
+++ src/common/parsedate.y
@@ -41,7 +41,7 @@ typedef char        *STRING;
 typedef char        *CSTRING;
 #endif  /* defined(__STDC__) */
 
-#define CTYPE(isXXXXX, c)   ((isascii((c)) && isXXXXX((c))))
+#define CTYPE(isXXXXX, c)   ((isascii((unsigned char)(c)) && isXXXXX((unsigned char)(c))))
 
 /* Stuff from inn macros.h */
 #define SIZEOF(array)  ((int)(sizeof array / sizeof array[0]))
@@ -738,7 +738,7 @@ date_lex(void)
 	if (CTYPE(isalpha, c)) {
 	    for (p = buff; (c = *yyInput++) == '.' || CTYPE(isalpha, c); )
 		if (p < &buff[sizeof buff - 1])
-		    *p++ = CTYPE(isupper, c) ? tolower(c) : c;
+		    *p++ = CTYPE(isupper, c) ? tolower((unsigned char)c) : c;
 	    *p = '\0';
 	    yyInput--;
 	    return LookupWord(buff, p - buff);