[anonymous] [bug #22017] zic can generate files which crash the linux kernel
Paul Eggert
eggert at CS.UCLA.EDU
Mon Jan 14 17:42:48 UTC 2008
<http://savannah.gnu.org/bugs/?22017> reports an interesting test case
whereby zic generates data that crashes the Linux kernel. I thought
I'd forward it to this mailing list so that non-Linux people can hear
about it.
Here's the test case. It makes the GNU C library tzfile.c fail
with an assertion that numtypes==1.
# /etc/timezone (auto-generated)
# Daylight savings time rules
# Name YrStart YrEnd Type Month,Day,At,Offset Letter
Rule DAYLIGHT 2000 max - Mar lastSun 02:00 01:00 -
Rule DAYLIGHT 2000 max - Oct lastSun 03:00 -01:00 -
# Timezone description
# NAME Offset Rule Name(/DaylightName)
Zone localtime 00:00 DAYLIGHT GMT/BST
More information about the tz
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