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| author | Ulrich Drepper <drepper@redhat.com> | 2006-09-09 16:56:29 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2006-09-09 16:56:29 +0000 |
| commit | 41aba3d764a72e48fa5bb08969653582c38f319f (patch) | |
| tree | feeee7701d8bbae975a0d26685572122b0e52525 /time/mktime.c | |
| parent | eaa51b472caf30435e094b975308a5d45c13278a (diff) | |
| download | glibc-41aba3d764a72e48fa5bb08969653582c38f319f.zip glibc-41aba3d764a72e48fa5bb08969653582c38f319f.tar.gz glibc-41aba3d764a72e48fa5bb08969653582c38f319f.tar.bz2 | |
[BZ #2821]cvs/fedora-glibc-20060910T1832
* time/mktime.c (guess_time_tm): Fix overflow detection.
* time/Makefile (tests): Add bug-mktime1.
* time/bug-mktime1.c: New file.
Diffstat (limited to 'time/mktime.c')
| -rw-r--r-- | time/mktime.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/time/mktime.c b/time/mktime.c index 5a326d1..8f00c72 100644 --- a/time/mktime.c +++ b/time/mktime.c @@ -1,7 +1,7 @@ /* Convert a `struct tm' to a time_t value. - Copyright (C) 1993-1999, 2002-2004, 2005 Free Software Foundation, Inc. + Copyright (C) 1993-1999, 2002-2005, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. - Contributed by Paul Eggert (eggert@twinsun.com). + Contributed by Paul Eggert <eggert@twinsun.com>. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -216,10 +216,11 @@ guess_time_tm (long int year, long int yday, int hour, int min, int sec, /* Overflow occurred one way or another. Return the nearest result that is actually in range, except don't report a zero difference if the actual difference is nonzero, as that would cause a false - match. */ + match; and don't oscillate between two values, as that would + confuse the spring-forward gap detector. */ return (*t < TIME_T_MIDPOINT - ? TIME_T_MIN + (*t == TIME_T_MIN) - : TIME_T_MAX - (*t == TIME_T_MAX)); + ? (*t <= TIME_T_MIN + 1 ? *t + 1 : TIME_T_MIN) + : (TIME_T_MAX - 1 <= *t ? *t - 1 : TIME_T_MAX)); } /* Use CONVERT to convert *T to a broken down time in *TP. |