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| author | Paul Eggert <eggert@cs.ucla.edu> | 2022-02-19 15:04:43 -0800 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2022-02-19 15:28:11 -0800 |
| commit | 06b2e943be39284783ff81ac6c9503200f41dba3 (patch) | |
| tree | 05f59fa34157a79ebaef39a3433838da9b7d5540 /ChangeLog | |
| parent | 9f48fb992a3d7e96610c4ce8be969cff2d61a01b (diff) | |
| download | gnulib-06b2e943be39284783ff81ac6c9503200f41dba3.tar.gz | |
mktime: improve heuristic for ca-1986 Indiana DST
Problem reported by Mark Krenz <https://bugs.gnu.org/48085>.
* lib/mktime.c (__mktime_internal): Be more generous about
accepting arguments with the wrong value of tm_isdst, by falling
back to a one-hour DST difference if we find no nearby DST that is
unusual. This fixes a problem where "1986-04-28 00:00 EDT" was
rejected when TZ="America/Indianapolis" because the nearest DST
timestamp occurred in 1970, a temporal distance too great for the
old heuristic. This also also narrows the search a bit, which
is a minor performance win.
* m4/mktime.m4 (gl_FUNC_MKTIME_WORKS):
Check for putenv failures and for Bug#48085.
* tests/test-parse-datetime.c (main):
Test for setenv failures and for Bug#48085.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 17 |
1 files changed, 17 insertions, 0 deletions
@@ -1,3 +1,20 @@ +2022-02-19 Paul Eggert <eggert@cs.ucla.edu> + + mktime: improve heuristic for ca-1986 Indiana DST + Problem reported by Mark Krenz <https://bugs.gnu.org/48085>. + * lib/mktime.c (__mktime_internal): Be more generous about + accepting arguments with the wrong value of tm_isdst, by falling + back to a one-hour DST difference if we find no nearby DST that is + unusual. This fixes a problem where "1986-04-28 00:00 EDT" was + rejected when TZ="America/Indianapolis" because the nearest DST + timestamp occurred in 1970, a temporal distance too great for the + old heuristic. This also also narrows the search a bit, which + is a minor performance win. + * m4/mktime.m4 (gl_FUNC_MKTIME_WORKS): + Check for putenv failures and for Bug#48085. + * tests/test-parse-datetime.c (main): + Test for setenv failures and for Bug#48085. + 2022-02-12 Paul Eggert <eggert@cs.ucla.edu> filevercmp: fix several unexpected results |