56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
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/* Test iconv buffer handling with the IGNORE error handler.
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Copyright (C) 2019-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* Derived from BZ #18830 */
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#include <errno.h>
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#include <iconv.h>
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#include <stdio.h>
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#include <support/check.h>
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static int
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do_test (void)
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{
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/* This conversion needs two steps, from ASCII to INTERNAL to ASCII. */
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iconv_t cd = iconv_open ("ASCII//IGNORE", "ASCII");
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TEST_VERIFY_EXIT (cd != (iconv_t) -1);
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/* Convert some irreversible sequence, enough to trigger an overflow of
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the output buffer before the irreversible character in the second
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step, but after going past the irreversible character in the first
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step. */
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char input[4 + 4] = { '0', '1', '2', '3', '4', '5', '\266', '7' };
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char *inptr = input;
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size_t insize = sizeof (input);
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char output[4];
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char *outptr = output;
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size_t outsize = sizeof (output);
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/* The conversion should fail. */
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TEST_VERIFY (iconv (cd, &inptr, &insize, &outptr, &outsize) == (size_t) -1);
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TEST_VERIFY (errno == E2BIG);
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/* The conversion should not consume more than it was able to store in
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the output buffer. */
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TEST_COMPARE (inptr - input, sizeof (output) - outsize);
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TEST_VERIFY_EXIT (iconv_close (cd) != -1);
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return 0;
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}
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#include <support/test-driver.c>
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