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$NetBSD: patch-lib_rules.c,v 1.1 2020/11/22 11:36:32 nia Exp $
Argument to ctype functions must be unsigned char.
--- lib/rules.c.orig 2019-02-14 01:54:41.000000000 +0000
+++ lib/rules.c
@@ -14,8 +14,8 @@ static const char vers_id[] = "rules.c :
#include "crack.h"
#include "packer.h"
-#define CRACK_TOLOWER(a) (isupper(a)?tolower(a):(a))
-#define CRACK_TOUPPER(a) (islower(a)?toupper(a):(a))
+#define CRACK_TOLOWER(a) (isupper((unsigned char)a)?tolower((unsigned char)a):(a))
+#define CRACK_TOUPPER(a) (islower((unsigned char)a)?toupper((unsigned char)a):(a))
#define STRCMP(a,b) strcmp((a),(b))
#if 0
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