On Mon, 15 Feb 2021 at 15:31, Diego Kreutz <kreutz@xxxxxxx> wrote: > I found a bug in the cal command. It is a segmentation fault for the > following input. > > cal -d 20210516 > Segmentation fault: 11 > > The segmentation fault happens with exactly 8 digits. However, there > is something going wrong with more digits as well. With 9 or more > digits, the command's output gets weird. > > I checked the bug in three systems (Debian 10, OS X, and Ubuntu Server 16.04). > > Linux NAME 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5+deb10u2 (2019-08-08) > x86_64 GNU/Linux > > Darwin NAME 19.6.0 Darwin Kernel Version 19.6.0: Tue Jan 12 22:13:05 > PST 2021; root:xnu-6153.141.16~1/RELEASE_X86_64 x86_64 > > Linux NAME 4.4.0-116-generic #140-Ubuntu SMP Mon Feb 12 21:23:04 UTC > 2018 x86_64 x86_64 x86_64 GNU/Linux > > Unfortunately, I don't have the time to go through the code and > provide a detailed fix for the issue. However, I assume it should be > fairly straightforward for the maintainers to find and fix this bug. Hi Diego I am almost certain you reached wrong mail-list. The util-linux cal(1) does not have -d option, $ cal -d 20210516 cal: invalid option -- 'd' Try 'cal --help' for more information. $ cal --version cal from util-linux 2.36.2 I suspect you might be using GNU cal that has -d, --include-today option[1]. If that is correct the report is best to forward to related mail-list[2]. [1] https://www.gnu.org/software/gcal/manual/gcal.html#index-_002dd [2] https://www.gnu.org/software/gcal/ -- Sami Kerola http://www.iki.fi/kerolasa/
