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| author | P. J. McDermott <pj@pehjota.net> | 2022-03-19 20:02:58 (EDT) |
|---|---|---|
| committer | P. J. McDermott <pj@pehjota.net> | 2022-03-19 20:02:58 (EDT) |
| commit | 8cac29fafce285f1bd1f51ef89a57fdde347f75a (patch) | |
| tree | cff10885f63016c33874bd0ed63976ca7b06b494 /m4/gl_manywarnings.m4 | |
| parent | 004891c1800b77f8a1e84030b42b100484bae8a0 (diff) | |
| download | atsign-8cac29fafce285f1bd1f51ef89a57fdde347f75a.zip atsign-8cac29fafce285f1bd1f51ef89a57fdde347f75a.tar.gz atsign-8cac29fafce285f1bd1f51ef89a57fdde347f75a.tar.bz2 | |
main: Pass NULL to time()
If the argument points outside the accessible address space, Linux's
time() system call returns a negative value. [1] But since this is
indistinguishable from a successful report that the time is before the
Epoch, glibc never actually sets errno.
The Linux man-pages project recommends: "The tloc argument is
obsolescent and should always be NULL in new code. When tloc is NULL,
the call cannot fail." [2]
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/kernel/time/time.c
[2]: https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/commit/man2/time.2?id=300c07ddd873fa1abbff96262ec365271e429dab
Diffstat (limited to 'm4/gl_manywarnings.m4')
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