1/* Copyright (C) 1991-2020 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, see
16 <https://www.gnu.org/licenses/>. */
17
18#include "libioP.h"
19#include "stdio.h"
20
21#undef putchar
22
23int
24putchar (int c)
25{
26 int result;
27 _IO_acquire_lock (stdout);
28 result = _IO_putc_unlocked (c, stdout);
29 _IO_release_lock (stdout);
30 return result;
31}
32
33#if defined weak_alias && !defined _IO_MTSAFE_IO
34#undef putchar_unlocked
35weak_alias (putchar, putchar_unlocked)
36#endif
37