1 /* Copyright (C) 2008-2023 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
39 static int __attribute__ ((format (scanf, 2, 3)))
40 xsscanf (const char *str, const char *fmt, ...)
41 {
42 va_list ap;
43 va_start (ap, fmt);
44 int ret = vsscanf (str, fmt, ap);
45 va_end (ap);
46 return ret;
47 }
48
49 static int __attribute__ ((format (scanf, 1, 2)))
50 xscanf (const char *fmt, ...)
51 {
52 va_list ap;
53 va_start (ap, fmt);
54 int ret = vscanf (fmt, ap);
55 va_end (ap);
56 return ret;
57 }
58
59 static int __attribute__ ((format (scanf, 2, 3)))
60 xfscanf (FILE *f, const char *fmt, ...)
61 {
62 va_list ap;
63 va_start (ap, fmt);
64 int ret = vfscanf (f, fmt, ap);
65 va_end (ap);
66 return ret;
67 }
68
69 int
70 main (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 (" 0.25s x", "%e%3c", &f, c) != 2)
80 FAIL ();
81 else if (f != 0.25 || memcmp (c, "s x", 3) != 0)
82 FAIL ();
83 if (xsscanf (" 1.25s x", "%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 (sp);
91 }
92 if (xsscanf (" 2.25s x", "%las%2c", &d, c) != 2)
93 FAIL ();
94 else if (d != 2.25 || memcmp (c, " x", 2) != 0)
95 FAIL ();
96 if (xsscanf (" 3.25S x", "%4aS%3c", &lsp, c) != 2)
97 FAIL ();
98 else
99 {
100 if (wcscmp (lsp, L"3.25") != 0 || memcmp (c, "S x", 3) != 0)
101 FAIL ();
102 memset (lsp, 'x', sizeof L"3.25");
103 free (lsp);
104 }
105 if (xsscanf ("4.25[0-9.] x", "%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 (sp);
113 }
114 if (xsscanf ("5.25[0-9.] x", "%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 (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 (fp, "%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 (sp);
148 }
149
150 if (freopen (fname, "r", stdin) == NULL)
151 FAIL ();
152 else
153 {
154 if (xscanf ("%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 (sp);
162 }
163 }
164
165 fclose (fp);
166 }
167
168 remove (fname);
169
170 return result;
171 }