-/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1991-2019 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 Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ 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
-Library General Public License for more details.
+ 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 Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#include "libioP.h"
#include "stdio.h"
#undef putchar
int
-putchar (c)
- int c;
+putchar (int c)
{
- return _IO_putc (c, stdout);
+ int result;
+ _IO_acquire_lock (stdout);
+ result = _IO_putc_unlocked (c, stdout);
+ _IO_release_lock (stdout);
+ return result;
}
+
+#if defined weak_alias && !defined _IO_MTSAFE_IO
+#undef putchar_unlocked
+weak_alias (putchar, putchar_unlocked)
+#endif