misc/bits/select-decl.h

   1 /* Checking routines for select functions. Declaration only.
   2    Copyright (C) 2023-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _BITS_SELECT_DECL_H
  20 #define _BITS_SELECT_DECL_H 1
  21
  22 #ifndef _SYS_SELECT_H
  23 # error "Never include <bits/select-decl.h> directly; use <sys/select.h> instead."
  24 #endif
  25
  26 /* Helper functions to issue warnings and errors when needed.  */
  27 extern long int __fdelt_chk (long int __d);
  28 extern long int __fdelt_warn (long int __d)
  29   __warnattr ("bit outside of fd_set selected");
  30
  31 #endif