libio/putchar.c

   1 /* Copyright (C) 1991, 1995, 1996 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include "libioP.h"
  20 #include "stdio.h"
  21
  22 #undef putchar
  23
  24 int
  25 putchar (c)
  26      int c;
  27 {
  28   int result;
  29   __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile,
  30                                _IO_stdout);
  31   _IO_flockfile (_IO_stdout);
  32   result = _IO_putc_unlocked (c, _IO_stdout);
  33   __libc_cleanup_region_end (1);
  34   return result;
  35 }
  36
  37 #ifdef _IO_MTSAFE_IO
  38 # undef putchar_locked
  39
  40 weak_alias (putchar, putchar_locked)
  41 #endif