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do the overflow check in a way that gcc-4.5 likes.

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This commit is contained in:
christos 2011-08-16 07:51:46 +00:00
parent a581a744b5
commit 0087958f8b
1 changed files with 12 additions and 5 deletions
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17
lib/libc/time/zdump.c
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@ -1,4 +1,4 @@
/* $NetBSD: zdump.c,v 1.19 2011/01/15 12:31:57 martin Exp $ */ /* $NetBSD: zdump.c,v 1.20 2011/08/16 07:51:46 christos Exp $ */
/* /*
** This file is in the public domain, so clarified as of ** This file is in the public domain, so clarified as of
** 2009-05-17 by Arthur David Olson. ** 2009-05-17 by Arthur David Olson.
@ -7,7 +7,7 @@
#include <sys/cdefs.h> #include <sys/cdefs.h>
#ifndef lint #ifndef lint
#ifndef NOID #ifndef NOID
__RCSID("$NetBSD: zdump.c,v 1.19 2011/01/15 12:31:57 martin Exp $"); __RCSID("$NetBSD: zdump.c,v 1.20 2011/08/16 07:51:46 christos Exp $");
#endif /* !defined NOID */ #endif /* !defined NOID */
#endif /* !defined lint */ #endif /* !defined lint */
@ -410,6 +410,15 @@ char * argv[];
return EXIT_FAILURE; return EXIT_FAILURE;
} }
static time_t
ovfl_check(time_t t)
{
if (t < 0 && t - 1 >= 0)
return t;
else
return t - 1;
}
static void static void
setabsolutes(void) setabsolutes(void)
{ {
@ -443,9 +452,7 @@ _("%s: use of -v on system with floating time_t other than float or double\n"),
absolute_max_time = t; absolute_max_time = t;
t = -t; t = -t;
absolute_min_time = t - 1; absolute_min_time = ovfl_check(t);
if (t < absolute_min_time)
absolute_min_time = t;
} else { } else {
/* /*
** time_t is unsigned. ** time_t is unsigned.