diff options
Diffstat (limited to 'time')
| -rw-r--r-- | time/mktime.c | 14 | ||||
| -rw-r--r-- | time/tst-mktime.c | 36 |
2 files changed, 47 insertions, 3 deletions
diff --git a/time/mktime.c b/time/mktime.c index 5632f14b78..1aec223e0e 100644 --- a/time/mktime.c +++ b/time/mktime.c @@ -259,8 +259,10 @@ __mktime_internal (struct tm *tp, int sec_requested = sec; - /* Only years after 1970 are defined. */ - if (year < 70) + /* Only years after 1970 are defined. + If year is 69, it might still be representable due to + timezone differences. */ + if (year < 69) return -1; #if LEAP_SECONDS_POSSIBLE @@ -370,6 +372,14 @@ __mktime_internal (struct tm *tp, return -1; } + if (year == 69) + { + /* If year was 69, need to check whether the time was representable + or not. */ + if (t < 0 || t > 2 * 24 * 60 * 60) + return -1; + } + *tp = tm; return t; } diff --git a/time/tst-mktime.c b/time/tst-mktime.c index 70c123c3f9..7ce1d45dd5 100644 --- a/time/tst-mktime.c +++ b/time/tst-mktime.c @@ -5,7 +5,8 @@ int main (void) { - struct tm time_str; + struct tm time_str, *tm; + time_t t; char daybuf[20]; int result; @@ -29,5 +30,38 @@ main (void) result = strcmp (daybuf, "Wednesday") != 0; } + setenv ("TZ", "EST", 1); +#define EVENING69 1 * 60 * 60 + 2 * 60 + 29 + t = EVENING69; + tm = localtime (&t); + if (tm == NULL) + { + (void) puts ("localtime returned NULL"); + result = 1; + } + else + { + time_str = *tm; + t = mktime (&time_str); + if (t != EVENING69) + { + printf ("mktime returned %ld, expected %ld\n", + (long) t, EVENING69); + result = 1; + } + else + (void) puts ("Dec 31 1969 EST test passed"); + + setenv ("TZ", "CET", 1); + t = mktime (&time_str); + if (t != (time_t) -1) + { + printf ("mktime returned %ld, expected -1\n", (long) t); + result = 1; + } + else + (void) puts ("Dec 31 1969 CET test passed"); + } + return result; } |