diff options
Diffstat (limited to 'libc/misc/time/time.c')
| -rw-r--r-- | libc/misc/time/time.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/libc/misc/time/time.c b/libc/misc/time/time.c index 69e688b40..be3216423 100644 --- a/libc/misc/time/time.c +++ b/libc/misc/time/time.c @@ -128,6 +128,10 @@ * Fix a dst-related bug which resulted in use of uninitialized data. * * Nov 15, 2003 I forgot to update the thread locking in the last dst fix. + * + * Dec 14, 2003 Fix some dst issues in _time_mktime(). + * Normalize the tm_isdst value to -1, 0, or 1. + * If no dst for this timezone, then reset tm_isdst to 0. */ #define _GNU_SOURCE @@ -2108,11 +2112,14 @@ time_t _time_mktime(struct tm *timeptr, int store_on_success) memcpy(p, timeptr, sizeof(struct tm)); - if ((default_dst = p[8]) < 0) { /* Try to determing if dst? */ - default_dst = 1; /* Assume advancing. */ - if (!_time_tzinfo[1].tzname[0]) { /* Oops... no dst. */ - default_dst = p[8] = 0; - } + if (!_time_tzinfo[1].tzname[0]) { /* No dst in this timezone, */ + p[8] = 0; /* so set tm_isdst to 0. */ + } + + default_dst = 0; + if (p[8]) { /* Either dst or unknown? */ + default_dst = 1; /* Assume advancing (even if unknown). */ + p[8] = ((p[8] > 0) ? 1 : -1); /* Normalize so abs() <= 1. */ } d = 400; |