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1/* Test that assigning to stdin redirects input (bug 24153).
2 Copyright (C) 2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19/* Prevent getchar -> getc inline expansion. */
20#define __NO_INLINE__
21#pragma GCC optimize ("O0")
22
23#include <stdarg.h>
24#include <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27#include <support/check.h>
28#include <support/temp_file.h>
29#include <support/xstdio.h>
30#include <support/xunistd.h>
31#include <wchar.h>
32
33static int
34call_vscanf (const char *format, ...)
35{
36 va_list ap;
37 va_start (ap, format);
38 int ret = vscanf (format, ap);
39 va_end (ap);
40 return ret;
41}
42
43static int
44call_vwscanf (const wchar_t *format, ...)
45{
46 va_list ap;
47 va_start (ap, format);
48 int ret = vwscanf (format, ap);
49 va_end (ap);
50 return ret;
51}
52
53static void
54narrow (const char *path)
55{
56 FILE *old_stdin = stdin;
57 stdin = xfopen (path, "r");
58
59 TEST_COMPARE (getchar (), 'a');
60 TEST_COMPARE (getchar_unlocked (), 'b');
61 char ch = 1;
62 TEST_COMPARE (scanf ("%c", &ch), 1);
63 TEST_COMPARE (ch, 'c');
64 TEST_COMPARE (call_vscanf ("%c", &ch), 1);
65 TEST_COMPARE (ch, 'd');
66 char buf[8];
67 memset (buf, 'X', sizeof (buf));
68
69 /* Legacy interface. */
70 extern char *gets (char *);
71 TEST_VERIFY (gets (buf) == buf);
72 TEST_COMPARE_BLOB (buf, sizeof (buf), "ef\0XXXXX", sizeof (buf));
73
74 fclose (stdin);
75 stdin = old_stdin;
76}
77
78static void
79wide (const char *path)
80{
81 FILE *old_stdin = stdin;
82 stdin = xfopen (path, "r");
83
84 TEST_COMPARE (getwchar (), L'a');
85 TEST_COMPARE (getwchar_unlocked (), L'b');
86 wchar_t ch = 1;
87 TEST_COMPARE (wscanf (L"%lc", &ch), 1);
88 TEST_COMPARE (ch, L'c');
89 TEST_COMPARE (call_vwscanf (L"%lc", &ch), 1);
90 TEST_COMPARE (ch, L'd');
91
92 fclose (stdin);
93 stdin = old_stdin;
94}
95
96static int
97do_test (void)
98{
99 char *path;
100 {
101 int fd = create_temp_file ("tst-bz24153-", &path);
102 TEST_VERIFY_EXIT (fd >= 0);
103 xwrite (fd, "abcdef", strlen ("abcdef"));
104 xclose (fd);
105 }
106
107 narrow (path);
108 wide (path);
109
110 free (path);
111 return 0;
112}
113
114#include <support/test-driver.c>
115

Warning: That file was not part of the compilation database. It may have many parsing errors.