1 | /* Test iconv buffer handling with the IGNORE error handler. |
2 | Copyright (C) 2019-2022 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 | /* Derived from BZ #18830 */ |
20 | #include <errno.h> |
21 | #include <iconv.h> |
22 | #include <stdio.h> |
23 | #include <support/check.h> |
24 | |
25 | static int |
26 | do_test (void) |
27 | { |
28 | /* This conversion needs two steps, from ASCII to INTERNAL to ASCII. */ |
29 | iconv_t cd = iconv_open (tocode: "ASCII//IGNORE" , fromcode: "ASCII" ); |
30 | TEST_VERIFY_EXIT (cd != (iconv_t) -1); |
31 | |
32 | /* Convert some irreversible sequence, enough to trigger an overflow of |
33 | the output buffer before the irreversible character in the second |
34 | step, but after going past the irreversible character in the first |
35 | step. */ |
36 | char input[4 + 4] = { '0', '1', '2', '3', '4', '5', '\266', '7' }; |
37 | char *inptr = input; |
38 | size_t insize = sizeof (input); |
39 | char output[4]; |
40 | char *outptr = output; |
41 | size_t outsize = sizeof (output); |
42 | |
43 | /* The conversion should fail. */ |
44 | TEST_VERIFY (iconv (cd, &inptr, &insize, &outptr, &outsize) == (size_t) -1); |
45 | TEST_VERIFY (errno == E2BIG); |
46 | /* The conversion should not consume more than it was able to store in |
47 | the output buffer. */ |
48 | TEST_COMPARE (inptr - input, sizeof (output) - outsize); |
49 | |
50 | TEST_VERIFY_EXIT (iconv_close (cd) != -1); |
51 | |
52 | return 0; |
53 | } |
54 | |
55 | #include <support/test-driver.c> |
56 | |