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5f10701fdc
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.
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include "libioP.h"
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#include "stdio.h"
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#undef putchar
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int
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putchar (int c)
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{
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int result;
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_IO_acquire_lock (stdout);
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result = _IO_putc_unlocked (c, stdout);
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_IO_release_lock (stdout);
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return result;
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}
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#if defined weak_alias && !defined _IO_MTSAFE_IO
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#undef putchar_unlocked
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weak_alias (putchar, putchar_unlocked)
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#endif
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