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Only check in-boundsness of seconds when time_t is smaller than i64

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Otherwise coverity complains that we're checking an whether an int64 is
less than INT64_MIN, which of course it isn't.

Fixes CID 1357176. Not in any released Tor.
This commit is contained in:
Nick Mathewson 2016-03-25 16:46:02 -04:00
parent 049445bca3
commit 4bb44f2c15
1 changed files with 4 additions and 1 deletions
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5
src/common/util.c
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@ -1528,11 +1528,14 @@ tor_timegm(const struct tm *tm, time_t *time_out)
seconds = minutes*60 + tm->tm_sec;
/* Check that "seconds" will fit in a time_t. On platforms where time_t is
* 32-bit, this check will fail for dates in and after 2038.
* "seconds" can't be negative, because "year" >= 1970. */
*
* We already know that "seconds" can't be negative because "year" >= 1970 */
#if SIZEOF_TIME_T < 8
if (seconds < TIME_MIN || seconds > TIME_MAX) {
log_warn(LD_BUG, "Result does not fit in tor_timegm");
return -1;
}
#endif
*time_out = (time_t)seconds;
return 0;
}