1/* Copyright (C) 2007-2022 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#include <stdio.h>
19#include <stdlib.h>
20#include <string.h>
21#include <wchar.h>
22
23#if __GLIBC_USE_DEPRECATED_SCANF
24# error "This file should not be compiled with deprecated scanf"
25#endif
26
27#define FAIL() \
28 do { \
29 result = 1; \
30 printf ("test at line %d failed\n", __LINE__); \
31 } while (0)
32
33int
34main (void)
35{
36 wchar_t *lsp;
37 char *sp;
38 float f;
39 double d;
40 char c[8];
41 int result = 0;
42
43 if (sscanf (" 0.25s x", "%e%3c", &f, c) != 2)
44 FAIL ();
45 else if (f != 0.25 || memcmp (c, "s x", 3) != 0)
46 FAIL ();
47 if (sscanf (" 1.25s x", "%ms%2c", &sp, c) != 2)
48 FAIL ();
49 else
50 {
51 if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
52 FAIL ();
53 memset (sp, 'x', sizeof "1.25s");
54 free (ptr: sp);
55 }
56 if (sscanf (" 2.25s x", "%las%2c", &d, c) != 2)
57 FAIL ();
58 else if (d != 2.25 || memcmp (c, " x", 2) != 0)
59 FAIL ();
60 if (sscanf (" 3.25S x", "%4mS%3c", &lsp, c) != 2)
61 FAIL ();
62 else
63 {
64 if (wcscmp (s1: lsp, s2: L"3.25") != 0 || memcmp (c, "S x", 3) != 0)
65 FAIL ();
66 memset (lsp, 'x', sizeof L"3.25");
67 free (ptr: lsp);
68 }
69 if (sscanf ("4.25[0-9.] x", "%m[0-9.]%8c", &sp, c) != 2)
70 FAIL ();
71 else
72 {
73 if (strcmp (sp, "4.25") != 0 || memcmp (c, "[0-9.] x", 8) != 0)
74 FAIL ();
75 memset (sp, 'x', sizeof "4.25");
76 free (ptr: sp);
77 }
78 if (sscanf ("5.25[0-9.] x", "%la[0-9.]%2c", &d, c) != 2)
79 FAIL ();
80 else if (d != 5.25 || memcmp (c, " x", 2) != 0)
81 FAIL ();
82
83 const char *tmpdir = getenv ("TMPDIR");
84 if (tmpdir == NULL || tmpdir[0] == '\0')
85 tmpdir = "/tmp";
86
87 char fname[strlen (tmpdir) + sizeof "/tst-scanf14.XXXXXX"];
88 sprintf (fname, "%s/tst-scanf14.XXXXXX", tmpdir);
89
90 /* Create a temporary file. */
91 int fd = mkstemp (template: fname);
92 if (fd == -1)
93 FAIL ();
94
95 FILE *fp = fdopen (fd, "w+");
96 if (fp == NULL)
97 FAIL ();
98 else
99 {
100 if (fputs (" 1.25s x", fp) == EOF)
101 FAIL ();
102 if (fseek (fp, 0, SEEK_SET) != 0)
103 FAIL ();
104 if (fscanf (stream: fp, format: "%ms%2c", &sp, c) != 2)
105 FAIL ();
106 else
107 {
108 if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
109 FAIL ();
110 memset (sp, 'x', sizeof "1.25s");
111 free (ptr: sp);
112 }
113
114 if (freopen (filename: fname, modes: "r", stdin) == NULL)
115 FAIL ();
116 else
117 {
118 if (scanf (format: "%ms%2c", &sp, c) != 2)
119 FAIL ();
120 else
121 {
122 if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
123 FAIL ();
124 memset (sp, 'x', sizeof "1.25s");
125 free (ptr: sp);
126 }
127 }
128
129 fclose (fp);
130 }
131
132 remove (fname);
133
134 return result;
135}
136

source code of glibc/stdio-common/scanf14.c