mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 14:00:30 +00:00
45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/* Copyright (C) 1993-2023 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 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>.
|
|
|
|
As a special exception, if you link the code in this file with
|
|
files compiled with a GNU compiler to produce an executable,
|
|
that does not cause the resulting executable to be covered by
|
|
the GNU Lesser General Public License. This exception does not
|
|
however invalidate any other reasons why the executable file
|
|
might be covered by the GNU Lesser General Public License.
|
|
This exception applies to code released by its copyright holders
|
|
in files containing the exception. */
|
|
|
|
#include "libioP.h"
|
|
|
|
int
|
|
ungetc (int c, FILE *fp)
|
|
{
|
|
int result;
|
|
CHECK_FILE (fp, EOF);
|
|
if (c == EOF)
|
|
return EOF;
|
|
if (!_IO_need_lock (fp))
|
|
return _IO_sputbackc (fp, (unsigned char) c);
|
|
_IO_acquire_lock (fp);
|
|
result = _IO_sputbackc (fp, (unsigned char) c);
|
|
_IO_release_lock (fp);
|
|
return result;
|
|
}
|
|
libc_hidden_def (ungetc)
|
|
strong_alias (ungetc, _IO_ungetc)
|