aboutsummaryrefslogtreecommitdiff
path: root/time/mktime.c
diff options
context:
space:
mode:
Diffstat (limited to 'time/mktime.c')
-rw-r--r--time/mktime.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/time/mktime.c b/time/mktime.c
index 5f3f3f2..101c197 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, 94, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
+ Copyright (C) 1993-1999, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Paul Eggert (eggert@twinsun.com).
@@ -246,7 +246,11 @@ __mktime_internal (struct tm *tp,
int mon_years = mon / 12 - negative_mon_remainder;
int year = year_requested + mon_years;
- /* The other values need not be in range:
+ /* Only years after 1970 are defined. */
+ if (year < 70)
+ return -1;
+
+ /* The other values need not be in range:
the remaining code handles minor overflows correctly,
assuming int and time_t arithmetic wraps around.
Major overflows are caught at the end. */