glibc/misc/bits/select2.h
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

36 lines
1.4 KiB
C

/* Checking macros for select functions.
Copyright (C) 2011-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _SYS_SELECT_H
# error "Never include <bits/select2.h> directly; use <sys/select.h> instead."
#endif
/* Helper functions to issue warnings and errors when needed. */
extern long int __fdelt_chk (long int __d);
extern long int __fdelt_warn (long int __d)
__warnattr ("bit outside of fd_set selected");
#undef __FD_ELT
#define __FD_ELT(d) \
__extension__ \
({ long int __d = (d); \
(__builtin_constant_p (__d) \
? (0 <= __d && __d < __FD_SETSIZE \
? (__d / __NFDBITS) \
: __fdelt_warn (__d)) \
: __fdelt_chk (__d)); })