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-rw-r--r--time/mktime.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/time/mktime.c b/time/mktime.c
index e299375a16..e47d69615a 100644
--- a/time/mktime.c
+++ b/time/mktime.c
@@ -1,5 +1,5 @@
/* Convert a `struct tm' to a time_t value.
- Copyright (C) 1993-1999, 2002-2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1993-1999, 2002-2007, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Paul Eggert <eggert@twinsun.com>.
@@ -293,7 +293,9 @@ __mktime_internal (struct tm *tp,
int mday = tp->tm_mday;
int mon = tp->tm_mon;
int year_requested = tp->tm_year;
- int isdst = tp->tm_isdst;
+ /* Normalize the value. */
+ int isdst = ((tp->tm_isdst >> (8 * sizeof (tp->tm_isdst) - 1))
+ | (tp->tm_isdst != 0));
/* 1 if the previous probe was DST. */
int dst2;