File: scanf17.c

package info (click to toggle)
glibc 2.24-11+deb9u4
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 225,852 kB
  • sloc: ansic: 996,505; asm: 261,827; sh: 10,484; makefile: 9,856; cpp: 4,169; python: 3,971; perl: 2,254; awk: 1,753; pascal: 1,521; yacc: 291; sed: 80
file content (130 lines) | stat: -rw-r--r-- 2,776 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
#undef _GNU_SOURCE
#define _XOPEN_SOURCE 600
#undef _LIBC
#undef _IO_MTSAFE_IO
/* The following macro definitions are a hack.  They word around disabling
   the GNU extension while still using a few internal headers.  */
#define u_char unsigned char
#define u_short unsigned short
#define u_int unsigned int
#define u_long unsigned long
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>

#define FAIL() \
  do {							\
    result = 1;						\
    printf ("test at line %d failed\n", __LINE__);	\
  } while (0)

static int
xsscanf (const char *str, const char *fmt, ...)
{
  va_list ap;
  va_start (ap, fmt);
  int ret = vsscanf (str, fmt, ap);
  va_end (ap);
  return ret;
}

static int
xscanf (const char *fmt, ...)
{
  va_list ap;
  va_start (ap, fmt);
  int ret = vscanf (fmt, ap);
  va_end (ap);
  return ret;
}

static int
xfscanf (FILE *f, const char *fmt, ...)
{
  va_list ap;
  va_start (ap, fmt);
  int ret = vfscanf (f, fmt, ap);
  va_end (ap);
  return ret;
}

int
main (void)
{
  float f;
  double d;
  char c[8];
  int result = 0;

  if (xsscanf (" 0.25s x", "%e%3c", &f, c) != 2)
    FAIL ();
  else if (f != 0.25 || memcmp (c, "s x", 3) != 0)
    FAIL ();
  if (xsscanf (" 1.25s x", "%as%2c", &f, c) != 2)
    FAIL ();
  else if (f != 1.25 || memcmp (c, " x", 2) != 0)
    FAIL ();
  if (xsscanf (" 2.25s x", "%las%2c", &d, c) != 2)
    FAIL ();
  else if (d != 2.25 || memcmp (c, " x", 2) != 0)
    FAIL ();
  if (xsscanf (" 3.25S x", "%4aS%2c", &f, c) != 2)
    FAIL ();
  else if (f != 3.25 || memcmp (c, " x", 2) != 0)
    FAIL ();
  if (xsscanf (" 4.25[0-9.] x", "%a[0-9.]%2c", &f, c) != 2)
    FAIL ();
  else if (f != 4.25 || memcmp (c, " x", 2) != 0)
    FAIL ();
  if (xsscanf (" 5.25[0-9.] x", "%la[0-9.]%2c", &d, c) != 2)
    FAIL ();
  else if (d != 5.25 || memcmp (c, " x", 2) != 0)
    FAIL ();

  const char *tmpdir = getenv ("TMPDIR");
  if (tmpdir == NULL || tmpdir[0] == '\0')
    tmpdir = "/tmp";

  char fname[strlen (tmpdir) + sizeof "/tst-scanf17.XXXXXX"];
  sprintf (fname, "%s/tst-scanf17.XXXXXX", tmpdir);
  if (fname == NULL)
    FAIL ();

  /* Create a temporary file.   */
  int fd = mkstemp (fname);
  if (fd == -1)
    FAIL ();

  FILE *fp = fdopen (fd, "w+");
  if (fp == NULL)
    FAIL ();
  else
    {
      if (fputs (" 1.25s x", fp) == EOF)
	FAIL ();
      if (fseek (fp, 0, SEEK_SET) != 0)
	FAIL ();
      if (xfscanf (fp, "%as%2c", &f, c) != 2)
	FAIL ();
      else if (f != 1.25 || memcmp (c, " x", 2) != 0)
	FAIL ();

      if (freopen (fname, "r", stdin) == NULL)
	FAIL ();
      else
	{
	  if (xscanf ("%as%2c", &f, c) != 2)
	    FAIL ();
	  else if (f != 1.25 || memcmp (c, " x", 2) != 0)
	    FAIL ();
	}

      fclose (fp);
    }

  remove (fname);

  return result;
}