1/* Copyright (C) 2008-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18/* This test exercises the deprecated GNU %as, %aS, and %a[...] scanf
19 modifiers, which are not available to programs compiled as C99
20 anymore; therefore, this file is compiled with -std=gnu89 and C99
21 syntax must not be used. */
22
23#include <stdarg.h>
24#include <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27#include <wchar.h>
28
29#if !__GLIBC_USE_DEPRECATED_SCANF
30# error "This file should be compiled with deprecated scanf"
31#endif
32
33#define FAIL() \
34 do { \
35 result = 1; \
36 printf ("test at line %d failed\n", __LINE__); \
37 } while (0)
38
39static int __attribute__ ((format (scanf, 2, 3)))
40xsscanf (const char *str, const char *fmt, ...)
41{
42 va_list ap;
43 va_start (ap, fmt);
44 int ret = vsscanf (s: str, format: fmt, arg: ap);
45 va_end (ap);
46 return ret;
47}
48
49static int __attribute__ ((format (scanf, 1, 2)))
50xscanf (const char *fmt, ...)
51{
52 va_list ap;
53 va_start (ap, fmt);
54 int ret = vscanf (format: fmt, arg: ap);
55 va_end (ap);
56 return ret;
57}
58
59static int __attribute__ ((format (scanf, 2, 3)))
60xfscanf (FILE *f, const char *fmt, ...)
61{
62 va_list ap;
63 va_start (ap, fmt);
64 int ret = vfscanf (s: f, format: fmt, arg: ap);
65 va_end (ap);
66 return ret;
67}
68
69int
70main (void)
71{
72 wchar_t *lsp;
73 char *sp;
74 float f;
75 double d;
76 char c[8];
77 int result = 0;
78
79 if (xsscanf (str: " 0.25s x", fmt: "%e%3c", &f, c) != 2)
80 FAIL ();
81 else if (f != 0.25 || memcmp (c, "s x", 3) != 0)
82 FAIL ();
83 if (xsscanf (str: " 1.25s x", fmt: "%as%2c", &sp, c) != 2)
84 FAIL ();
85 else
86 {
87 if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
88 FAIL ();
89 memset (sp, 'x', sizeof "1.25s");
90 free (ptr: sp);
91 }
92 if (xsscanf (str: " 2.25s x", fmt: "%las%2c", &d, c) != 2)
93 FAIL ();
94 else if (d != 2.25 || memcmp (c, " x", 2) != 0)
95 FAIL ();
96 if (xsscanf (str: " 3.25S x", fmt: "%4aS%3c", &lsp, c) != 2)
97 FAIL ();
98 else
99 {
100 if (wcscmp (s1: lsp, s2: L"3.25") != 0 || memcmp (c, "S x", 3) != 0)
101 FAIL ();
102 memset (lsp, 'x', sizeof L"3.25");
103 free (ptr: lsp);
104 }
105 if (xsscanf (str: "4.25[0-9.] x", fmt: "%a[0-9.]%8c", &sp, c) != 2)
106 FAIL ();
107 else
108 {
109 if (strcmp (sp, "4.25") != 0 || memcmp (c, "[0-9.] x", 8) != 0)
110 FAIL ();
111 memset (sp, 'x', sizeof "4.25");
112 free (ptr: sp);
113 }
114 if (xsscanf (str: "5.25[0-9.] x", fmt: "%la[0-9.]%2c", &d, c) != 2)
115 FAIL ();
116 else if (d != 5.25 || memcmp (c, " x", 2) != 0)
117 FAIL ();
118
119 const char *tmpdir = getenv ("TMPDIR");
120 if (tmpdir == NULL || tmpdir[0] == '\0')
121 tmpdir = "/tmp";
122
123 char fname[strlen (tmpdir) + sizeof "/tst-scanf16.XXXXXX"];
124 sprintf (fname, "%s/tst-scanf16.XXXXXX", tmpdir);
125
126 /* Create a temporary file. */
127 int fd = mkstemp (template: fname);
128 if (fd == -1)
129 FAIL ();
130
131 FILE *fp = fdopen (fd, "w+");
132 if (fp == NULL)
133 FAIL ();
134 else
135 {
136 if (fputs (" 1.25s x", fp) == EOF)
137 FAIL ();
138 if (fseek (fp, 0, SEEK_SET) != 0)
139 FAIL ();
140 if (xfscanf (f: fp, fmt: "%as%2c", &sp, c) != 2)
141 FAIL ();
142 else
143 {
144 if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
145 FAIL ();
146 memset (sp, 'x', sizeof "1.25s");
147 free (ptr: sp);
148 }
149
150 if (freopen (filename: fname, modes: "r", stdin) == NULL)
151 FAIL ();
152 else
153 {
154 if (xscanf (fmt: "%as%2c", &sp, c) != 2)
155 FAIL ();
156 else
157 {
158 if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
159 FAIL ();
160 memset (sp, 'x', sizeof "1.25s");
161 free (ptr: sp);
162 }
163 }
164
165 fclose (fp);
166 }
167
168 remove (fname);
169
170 return result;
171}
172

source code of glibc/stdio-common/scanf16a.c