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Fix overflow check in tm2timestamp (this time for sure).

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I fixed this code back in commit 841b4a2d5, but didn't think carefully
enough about the behavior near zero, which meant it improperly rejected
1999-12-31 24:00:00.  Per report from Magnus Hagander.
This commit is contained in:
Tom Lane
2013-03-04 15:13:31 -05:00
parent 0ea1f6e98f
commit 542eeba269
2 changed files with 6 additions and 4 deletions
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5
src/interfaces/ecpg/pgtypeslib/timestamp.c
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@@ -76,8 +76,9 @@ tm2timestamp(struct tm * tm, fsec_t fsec, int *tzp, timestamp * result)
if ((*result - time) / USECS_PER_DAY != dDate)
return -1;
/* check for just-barely overflow (okay except time-of-day wraps) */
if ((*result < 0 && dDate >= 0) ||
(*result >= 0 && dDate < 0))
/* caution: we want to allow 1999-12-31 24:00:00 */
if ((*result < 0 && dDate > 0) ||
(*result > 0 && dDate < -1))
return -1;
#else
*result = dDate * SECS_PER_DAY + time;