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Cast isalpha()'s argument to unsigned char.

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ok guenther@
This commit is contained in:
mmcc 2015-10-24 17:36:06 +00:00
parent 3c57379406
commit 02fcf05ac9
1 changed files with 2 additions and 2 deletions
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4
games/gomoku/stoc.c
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@ -1,4 +1,4 @@
/* $OpenBSD: stoc.c,v 1.8 2009/10/27 23:59:24 deraadt Exp $ */
/* $OpenBSD: stoc.c,v 1.9 2015/10/24 17:36:06 mmcc Exp $ */
/*
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
@ -78,7 +78,7 @@ ctos(mp)
for (i = 0; mv[i].m_code >= 0; i++)
if (strcmp(mp, mv[i].m_text) == 0)
return(mv[i].m_code);
if (!isalpha(mp[0]))
if (!isalpha((unsigned char)mp[0]))
return(ILLEGAL);
i = atoi(&mp[1]);
if (i < 1 || i > 19)