CVS commit: src/lib/libutil

["Christos Zoulas" <christos%netbsd.org@localhost>]

Module Name:    src
Committed By:   christos
Date:           Sun Dec 12 18:39:58 UTC 2010

Modified Files:
        src/lib/libutil: parsedate.y

Log Message:
PR/42549: Izumi Tsutsui: parsedate does not work after 2038.
Fix multiple issues:
- Remove bogus 2038 check and add overflow checks in the appropriate places.
- Correct incomplete leap year calculation that broke things after 2100.
- Check localtime return values
- Change int calculations to time_t to avoid oveflow.
- Consistently check/return -1 and remove bogus comment about not being
  able to return -1.

Now:
$ date -d 20991201
Tue Dec  1 00:00:00 EST 2099
$ date -d 40991201
Tue Dec  1 00:00:00 EST 4099
$ date -d 10000000991201
Tue Dec  1 00:00:00 EST 1000000099
TIME=0:04.48 CPU=117.8% (5.288u 0.000s) SWAPS=0 (0+95)pf (0i+0o) (0Kc+0Kd)
$ date -d 100000000991201
date: Cannot parse `100000000991201'
TIME=0:53.48 CPU=99.2% (53.086u 0.000s) SWAPS=0 (0+96)pf (0i+0o) (0Kc+0Kd)
Exit 1


To generate a diff of this commit:
cvs rdiff -u -r1.5 -r1.6 src/lib/libutil/parsedate.y

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.