glibc/libio/putchar_u.c
Paul Pluzhnikov 5f10701fdc libio: use stdout in puts and putchar, etc [BZ #24051].
GLIBC explicitly allows one to assign a new FILE pointer to stdout and
other standard streams.  printf and wprintf were honouring assignment to
stdout and using the new value, but puts, putchar, and wide char variants
did not.

The stdout part is fixed here.  The stdin part will be fixed in a followup.
2019-01-31 14:07:45 -08:00

29 lines
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C

/* 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 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
<http://www.gnu.org/licenses/>. */
#include "libioP.h"
#include "stdio.h"
#undef putchar_unlocked
int
putchar_unlocked (int c)
{
CHECK_FILE (stdout, EOF);
return _IO_putc_unlocked (c, stdout);
}