libio/putchar.c

   1 /* Copyright (C) 1991,1995,1996,1997,1998,2003 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 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   _IO_acquire_lock (_IO_stdout);
  30   result = _IO_putc_unlocked (c, _IO_stdout);
  31   _IO_release_lock (_IO_stdout);
  32   return result;
  33 }
  34
  35 #if defined weak_alias && !defined _IO_MTSAFE_IO
  36 #undef putchar_unlocked
  37 weak_alias (putchar, putchar_unlocked)
  38 #endif