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Previously, in UCS4 conversion routines we limit the number of characters we examine to the minimum of the number of characters in the input and the number of characters in the output. This is not the correct behavior when __GCONV_IGNORE_ERRORS is set, as we do not consume an output character when we skip a code unit. Instead, track the input and output pointers and terminate the loop when either reaches its limit. This resolves assertion failures when resetting the input buffer in a step of iconv, which assumes that the input will be fully consumed given sufficient output space.
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/* Test iconv behavior on UCS4 conversions with //IGNORE.
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Copyright (C) 2020 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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<http://www.gnu.org/licenses/>. */
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/* Derived from BZ #26923 */
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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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iconv_t cd = iconv_open ("UTF-8//IGNORE", "ISO-10646/UCS4/");
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TEST_VERIFY_EXIT (cd != (iconv_t) -1);
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/*
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* Convert sequence beginning with an irreversible character into buffer that
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* is too small.
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*/
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char input[12] = "\xe1\x80\xa1" "AAAAAAAAA";
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char *inptr = input;
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size_t insize = sizeof (input);
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char output[6];
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char *outptr = output;
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size_t outsize = sizeof (output);
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TEST_VERIFY (iconv (cd, &inptr, &insize, &outptr, &outsize) == -1);
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TEST_VERIFY (errno == E2BIG);
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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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