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/* Test that assigning to stdout redirects puts, putchar, etc (BZ#24051)
Copyright (C) 2019-2024 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/>. */
/* Prevent putchar -> _IO_putc inline expansion. */
#define __NO_INLINE__
#pragma GCC optimize("O0")
#include <stdio.h>
#include <string.h>
#include <wchar.h>
#include <array_length.h>
#include <support/check.h>
#include <support/temp_file.h>
#include <support/test-driver.h>
#undef putchar
#undef putwchar
static int
do_test_narrow (void)
{
char buf[100];
int fd = create_temp_file ("tst-bz24051", NULL);
stdout = fdopen (fd, "w+");
TEST_VERIFY_EXIT (stdout != NULL);
printf ("ab%s", "cd");
putchar ('e');
putchar_unlocked ('f');
puts ("ghi");
rewind (stdout);
TEST_VERIFY_EXIT (fgets (buf, sizeof (buf), stdout) != NULL);
TEST_VERIFY (strcmp (buf, "abcdefghi\n") == 0);
return 0;
}
static int
do_test_wide (void)
{
wchar_t buf[100];
int fd = create_temp_file ("tst-bz24051w", NULL);
stdout = fdopen (fd, "w+");
TEST_VERIFY_EXIT (stdout != NULL);
wprintf (L"ab%ls", L"cd");
putwchar (L'e');
putwchar_unlocked (L'f');
rewind (stdout);
TEST_VERIFY_EXIT (fgetws (buf, array_length (buf), stdout) != NULL);
TEST_VERIFY (wcscmp (buf, L"abcdef") == 0);
return 0;
}
static int
do_test (void)
{
return do_test_narrow () + do_test_wide ();
}
#include <support/test-driver.c>
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