diff options
Diffstat (limited to 'time/strftime.c')
| -rw-r--r-- | time/strftime.c | 40 |
1 files changed, 25 insertions, 15 deletions
diff --git a/time/strftime.c b/time/strftime.c index 214f82f488..129fd1412c 100644 --- a/time/strftime.c +++ b/time/strftime.c @@ -470,27 +470,37 @@ strftime (s, maxsize, format, tp) case 'z': { struct tm tml = *tp; - time_t t = mktime (&tml); struct tm tmg; + time_t t; + time_t offset = 0; int diff; - tml = *localtime (&t); /* Canonicalize the local time. */ - tmg = *gmtime (&t); + t = __mktime_internal (&tml, __localtime_r, &offset); - /* Compute the difference. */ - diff = tml.tm_min - tmg.tm_min; - diff += 60 * (tml.tm_hour - tmg.tm_hour); - - if (tml.tm_mon != tmg.tm_mon) + /* Canonicalize the local time. */ + if (t == (time_t) -1 || __localtime_r (&t, &tml) == NULL) + /* We didn't managed to get the local time. Assume it + GMT as a reasonable default value. */ + diff = 0; + else { - /* We assume no timezone differs from UTC by more than - +- 23 hours. This should be safe. */ - if (tmg.tm_mday == 1) - tml.tm_mday = 0; - else /* tml.tm_mday == 1 */ - tmg.tm_mday = 0; + __gmtime_r (&t, &tmg); + + /* Compute the difference. */ + diff = tml.tm_min - tmg.tm_min; + diff += 60 * (tml.tm_hour - tmg.tm_hour); + + if (tml.tm_mon != tmg.tm_mon) + { + /* We assume no timezone differs from UTC by more + than +- 23 hours. This should be safe. */ + if (tmg.tm_mday == 1) + tml.tm_mday = 0; + else /* tml.tm_mday == 1 */ + tmg.tm_mday = 0; + } + diff += 1440 * (tml.tm_mday - tmg.tm_mday); } - diff += 1440 * (tml.tm_mday - tmg.tm_mday); if (diff < 0) { |