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-rw-r--r--lib/libc/asr/asr_utils.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/libc/asr/asr_utils.c b/lib/libc/asr/asr_utils.c
index f5a1da8a528..20b10c58fa8 100644
--- a/lib/libc/asr/asr_utils.c
+++ b/lib/libc/asr/asr_utils.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: asr_utils.c,v 1.8 2013/07/12 14:36:21 eric Exp $ */
+/* $OpenBSD: asr_utils.c,v 1.9 2013/11/24 23:51:29 deraadt Exp $ */
/*
* Copyright (c) 2009-2012 Eric Faurot <eric@faurot.net>
*
@@ -55,7 +55,7 @@ dname_check_label(const char *s, size_t l)
return (-1);
for (l--; l; l--, s++)
- if (!(isalnum(*s) || *s == '_' || *s == '-'))
+ if (!(isalnum((unsigned char)*s) || *s == '_' || *s == '-'))
return (-1);
return (0);