1 | /* Test for integer/buffer overflow in strtod. |
2 | Copyright (C) 2012-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | #include <string.h> |
22 | #include <support/blob_repeat.h> |
23 | #include <support/test-driver.h> |
24 | |
25 | #define EXPONENT "e-2147483649" |
26 | #define SIZE 214748364 |
27 | |
28 | static int |
29 | do_test (void) |
30 | { |
31 | struct support_blob_repeat repeat = support_blob_repeat_allocate |
32 | (element: "0" , element_size: 1, count: 1 + SIZE + sizeof (EXPONENT)); |
33 | if (repeat.size == 0) |
34 | { |
35 | puts (s: "warning: memory allocation failed, cannot test for overflow" ); |
36 | return EXIT_UNSUPPORTED; |
37 | } |
38 | char *p = repeat.start; |
39 | p[0] = '1'; |
40 | memcpy (p + 1 + SIZE, EXPONENT, sizeof (EXPONENT)); |
41 | double d = strtod (p, NULL); |
42 | if (d != 0) |
43 | { |
44 | printf (format: "error: strtod returned wrong value: %a\n" , d); |
45 | return 1; |
46 | } |
47 | support_blob_repeat_free (&repeat); |
48 | return 0; |
49 | } |
50 | |
51 | #define TEST_FUNCTION do_test () |
52 | #define TIMEOUT 30 |
53 | #include "../test-skeleton.c" |
54 | |