File: tst-sscanf.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 (273 lines) | stat: -rw-r--r-- 7,280 bytes parent folder | download | duplicates (5)
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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
/* Copyright (C) 2000-2016 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jakub Jelinek <jakub@redhat.com>, 2000.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <stdlib.h>
#include <stdio.h>
#include <locale.h>

#ifndef CHAR
# define CHAR char
# define L(str) str
# define SSCANF sscanf
#endif

const CHAR *str_double[] =
{
  L("-.10000E+020.20000E+020.25000E+010.40000E+010.50000E+010.12500E+01"),
  L("0.10000E+020.20000E+020.25000E+010.40000E+010.50000E+010.12500E+01"),
  L("-1234567E0198765432E0912345678901987654321091234567890198765432109"),
  L("-0.1000E+020.20000E+020.25000E+010.40000E+010.50000E+010.12500E+01")
};

const double val_double[] =
{
  -.10000E+02, 0.20000E+02, 0.25000E+01, 0.40000E+01, 0.50000E+01, 0.12500E+01,
  0.10000E+02, 0.20000E+02, 0.25000E+01, 0.40000E+01, 0.50000E+01, 0.12500E+01,
  -1234567E01, 98765432E09, 12345678901.0, 98765432109.0, 12345678901.0,
    98765432109.0,
  -0.1000E+02, 0.20000E+02, 0.25000E+01, 0.40000E+01, 0.50000E+01, 0.12500E+01
};

const CHAR *str_long[] =
{
  L("-12345678987654321123456789987654321123456789987654321"),
  L("-12345678987654321123456789987654321123456789987654321"),
  L("-12,345,678987,654,321123,456,789987,654,321123,456,789987,654,321"),
  L("-12,345,678987,654,321123,456,789987,654,321123,456,789987,654,321")
};

const CHAR *fmt_long[] =
{
  L("%9ld%9ld%9ld%9ld%9ld%9ld"),
  L("%I9ld%I9ld%I9ld%I9ld%I9ld%I9ld"),
  L("%'11ld%'11ld%'11ld%'11ld%'11ld%'11ld"),
  L("%I'11ld%I'11ld%I'11ld%I'11ld%I'11ld%I'11ld")
};

const long int val_long[] =
{
  -12345678, 987654321, 123456789, 987654321, 123456789, 987654321
};

struct test
{
  const CHAR *str;
  const CHAR *fmt;
  int retval;
} int_tests[] =
{
  { L("foo\n"), L("foo\nbar"), -1 },
  { L("foo\n"), L("foo bar"), -1 },
  { L("foo\n"), L("foo %d"), -1 },
  { L("foo\n"), L("foo\n%d"), -1 },
  { L("foon"), L("foonbar"), -1 },
  { L("foon"), L("foon%d"), -1 },
  { L("foo "), L("foo bar"), -1 },
  { L("foo "), L("foo %d"), -1 },
  { L("foo\t"), L("foo\tbar"), -1 },
  { L("foo\t"), L("foo bar"), -1 },
  { L("foo\t"), L("foo %d"), -1 },
  { L("foo\t"), L("foo\t%d"), -1 },
  { L("foo"), L("foo"), 0 },
  { L("foon"), L("foo bar"), 0 },
  { L("foon"), L("foo %d"), 0 },
  { L("foo "), L("fooxbar"), 0 },
  { L("foo "), L("foox%d"), 0 },
  { L("foo bar"), L("foon"), 0 },
  { L("foo bar"), L("foo bar"), 0 },
  { L("foo bar"), L("foo %d"), 0 },
  { L("foo bar"), L("foon%d"), 0 },
  { L("foo (nil)"), L("foo %p"), 1},
  { L("foo (nil)"), L("foo %4p"), 0},
  { L("foo "), L("foo %n"), 0 },
  { L("foo%bar1"), L("foo%%bar%d"), 1 },
  /* Some OSes skip whitespace here while others don't.  */
  { L("foo \t %bar1"), L("foo%%bar%d"), 1 }
};

struct test double_tests[] =
{
  { L("-1"), L("%1g"), 0 },
  { L("-.1"), L("%2g"), 0 },
  { L("-inf"), L("%3g"), 0 },
  { L("+0"), L("%1g"),  },
  { L("-0x1p0"), L("%2g"), 1 },
  { L("-..1"), L("%g"), 0 },
  { L("-inf"), L("%g"), 1 }
};

struct test2
{
  const CHAR *str;
  const CHAR *fmt;
  int retval;
  char residual;
} double_tests2[] =
{
  { L("0e+0"), L("%g%c"), 1, 0 },
  { L("0xe+0"), L("%g%c"), 2, '+' },
  { L("0x.e+0"), L("%g%c"), 2, '+' },
};

static int
do_test (void)
{
  double d[6];
  long l[6];
  int i, j;
  int tst_locale;
  int result = 0;

  tst_locale = 1;
  if (tst_locale)
    if (setlocale (LC_ALL, "en_US.ISO-8859-1") == NULL)
      {
	puts ("Failed to set en_US locale, skipping locale related tests");
	tst_locale = 0;
      }

  for (i = 0; i < 4; ++i)
    {
      if (SSCANF (str_double[i], L("%11lf%11lf%11lf%11lf%11lf%11lf"),
		  &d[0], &d[1], &d[2], &d[3], &d[4], &d[5]) != 6)
	{
	  printf ("Double sscanf test %d wrong number of "
		  "assigned inputs\n", i);
	  result = 1;
	}
      else
	for (j = 0; j < 6; ++j)
	  if (d[j] != val_double[6 * i + j])
	    {
	      printf ("Double sscanf test %d failed (%g instead of %g)\n",
		      i, d[j], val_double[6 * i + j]);
	      result = 1;
	      break;
	    }
    }

  for (i = 0; i < 4; ++i)
    {
      if (SSCANF (str_long[i], fmt_long[i],
		  &l[0], &l[1], &l[2], &l[3], &l[4], &l[5]) != 6)
	{
	  printf ("Integer sscanf test %d wrong number of "
		  "assigned inputs\n", i);
	  result = 1;
	}
      else
	for (j = 0; j < 6; ++j)
	  if (l[j] != val_long[j])
	    {
	      printf ("Integer sscanf test %d failed (%ld instead %ld)\n",
		      i, l[j], val_long[j]);
	      result = 1;
	      break;
	    }

      if (! tst_locale)
	break;
    }

  for (i = 0; i < sizeof (int_tests) / sizeof (int_tests[0]); ++i)
    {
      long dummy;
      int ret;

      if ((ret = SSCANF (int_tests[i].str, int_tests[i].fmt,
			 &dummy)) != int_tests[i].retval)
	{
	  printf ("int_tests[%d] returned %d != %d\n",
		  i, ret, int_tests[i].retval);
	  result = 1;
	}
    }

  for (i = 0; i < sizeof (double_tests) / sizeof (double_tests[0]); ++i)
    {
      double dummy;
      int ret;

      if ((ret = SSCANF (double_tests[i].str, double_tests[i].fmt,
			 &dummy)) != double_tests[i].retval)
	{
	  printf ("double_tests[%d] returned %d != %d\n",
		  i, ret, double_tests[i].retval);
	  result = 1;
	}
    }

  for (i = 0; i < sizeof (double_tests2) / sizeof (double_tests2[0]); ++i)
    {
      double dummy;
      int ret;
      char c = 0;

      if ((ret = SSCANF (double_tests2[i].str, double_tests2[i].fmt,
			 &dummy, &c)) != double_tests2[i].retval)
	{
	  printf ("double_tests2[%d] returned %d != %d\n",
		  i, ret, double_tests2[i].retval);
	  result = 1;
	}
      else if (ret == 2 && c != double_tests2[i].residual)
	{
	  printf ("double_tests2[%d] stopped at '%c' != '%c'\n",
		  i, c, double_tests2[i].residual);
	  result = 1;
	}
    }

  /* BZ #16618
     The test will segfault during SSCANF if the buffer overflow
     is not fixed.  The size of `s` is such that it forces the use
     of malloc internally and this triggers the incorrect computation.
     Thus the value for SIZE is arbitrariy high enough that malloc
     is used.  */
  {
#define SIZE 131072
    CHAR *s = malloc ((SIZE + 1) * sizeof (*s));
    if (s == NULL)
      abort ();
    for (size_t i = 0; i < SIZE; i++)
      s[i] = L('0');
    s[SIZE] = L('\0');
    int i = 42;
    /* Scan multi-digit zero into `i`.  */
    if (SSCANF (s, L("%d"), &i) != 1)
      {
	printf ("FAIL: bug16618: SSCANF did not read one input item.\n");
	result = 1;
      }
    if (i != 0)
      {
	printf ("FAIL: bug16618: Value of `i` was not zero as expected.\n");
	result = 1;
      }
    free (s);
    if (result != 1)
      printf ("PASS: bug16618: Did not crash.\n");
#undef SIZE
  }


  return result;
}

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"