mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 22:40:05 +00:00
ee9941f94e
The internal _IO_stdin_ variable is not updated when the application assigns to stdin, which is a GNU extension.
115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
/* Test that assigning to stdin redirects input (bug 24153).
|
|
Copyright (C) 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/>. */
|
|
|
|
/* Prevent getchar -> getc inline expansion. */
|
|
#define __NO_INLINE__
|
|
#pragma GCC optimize ("O0")
|
|
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <support/check.h>
|
|
#include <support/temp_file.h>
|
|
#include <support/xstdio.h>
|
|
#include <support/xunistd.h>
|
|
#include <wchar.h>
|
|
|
|
static int
|
|
call_vscanf (const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
va_start (ap, format);
|
|
int ret = vscanf (format, ap);
|
|
va_end (ap);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
call_vwscanf (const wchar_t *format, ...)
|
|
{
|
|
va_list ap;
|
|
va_start (ap, format);
|
|
int ret = vwscanf (format, ap);
|
|
va_end (ap);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
narrow (const char *path)
|
|
{
|
|
FILE *old_stdin = stdin;
|
|
stdin = xfopen (path, "r");
|
|
|
|
TEST_COMPARE (getchar (), 'a');
|
|
TEST_COMPARE (getchar_unlocked (), 'b');
|
|
char ch = 1;
|
|
TEST_COMPARE (scanf ("%c", &ch), 1);
|
|
TEST_COMPARE (ch, 'c');
|
|
TEST_COMPARE (call_vscanf ("%c", &ch), 1);
|
|
TEST_COMPARE (ch, 'd');
|
|
char buf[8];
|
|
memset (buf, 'X', sizeof (buf));
|
|
|
|
/* Legacy interface. */
|
|
extern char *gets (char *);
|
|
TEST_VERIFY (gets (buf) == buf);
|
|
TEST_COMPARE_BLOB (buf, sizeof (buf), "ef\0XXXXX", sizeof (buf));
|
|
|
|
fclose (stdin);
|
|
stdin = old_stdin;
|
|
}
|
|
|
|
static void
|
|
wide (const char *path)
|
|
{
|
|
FILE *old_stdin = stdin;
|
|
stdin = xfopen (path, "r");
|
|
|
|
TEST_COMPARE (getwchar (), L'a');
|
|
TEST_COMPARE (getwchar_unlocked (), L'b');
|
|
wchar_t ch = 1;
|
|
TEST_COMPARE (wscanf (L"%c", &ch), 1);
|
|
TEST_COMPARE (ch, L'c');
|
|
TEST_COMPARE (call_vwscanf (L"%c", &ch), 1);
|
|
TEST_COMPARE (ch, L'd');
|
|
|
|
fclose (stdin);
|
|
stdin = old_stdin;
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
char *path;
|
|
{
|
|
int fd = create_temp_file ("tst-bz24153-", &path);
|
|
TEST_VERIFY_EXIT (fd >= 0);
|
|
xwrite (fd, "abcdef", strlen ("abcdef"));
|
|
xclose (fd);
|
|
}
|
|
|
|
narrow (path);
|
|
wide (path);
|
|
|
|
free (path);
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|