Fix handling of collating symbols in fnmatch (bug 26620)

The variable idx contains the index into the extra array, whereas wextra
points into the extra array at this index, containing the length of the
following collating sequence in the wide character representation.
This commit is contained in:
Andreas Schwab 2020-09-16 12:41:14 +02:00
parent 4b564f347f
commit a140ff9162
3 changed files with 41 additions and 3 deletions

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@ -96,7 +96,7 @@ tests := test-errno tstgetopt testfnm runtests runptests \
bug-getopt5 tst-getopt_long1 bug-regex34 bug-regex35 \
tst-pathconf tst-rxspencer-no-utf8 \
tst-fnmatch3 bug-regex36 \
tst-fnmatch4 tst-fnmatch5 \
tst-fnmatch4 tst-fnmatch5 tst-fnmatch6 \
tst-posix_spawn-fd tst-posix_spawn-setsid \
tst-posix_fadvise tst-posix_fadvise64 \
tst-sysconf-empty-chroot tst-glob_symlinks tst-fexecve \
@ -197,6 +197,7 @@ $(objpfx)bug-regex35.out: $(gen-locales)
$(objpfx)tst-fnmatch.out: $(gen-locales)
$(objpfx)tst-fnmatch4.out: $(gen-locales)
$(objpfx)tst-fnmatch5.out: $(gen-locales)
$(objpfx)tst-fnmatch6.out: $(gen-locales)
$(objpfx)tst-regex.out: $(gen-locales)
$(objpfx)tst-regex2.out: $(gen-locales)
$(objpfx)tst-regexloc.out: $(gen-locales)

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@ -564,7 +564,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
/* Get the collation sequence value. */
is_seqval = 1;
# if WIDE_CHAR_VERSION
cold = wextra[1 + wextra[idx]];
cold = wextra[1 + wextra[0]];
# else
idx += 1 + extra[idx];
/* Adjust for the alignment. */
@ -738,7 +738,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
/* Get the collation sequence value. */
is_seqval = 1;
# if WIDE_CHAR_VERSION
cend = wextra[1 + wextra[idx]];
cend = wextra[1 + wextra[0]];
# else
idx += 1 + extra[idx];
/* Adjust for the alignment. */

37
posix/tst-fnmatch6.c Normal file
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@ -0,0 +1,37 @@
/* Test for fnmatch handling of collating symbols (bug 26620)
Copyright (C) 2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <fnmatch.h>
#include <locale.h>
#include <support/check.h>
#include <support/support.h>
static int
do_test (void)
{
xsetlocale (LC_ALL, "en_US.UTF-8");
/* From iso14651_t1_common:
collating-element <U004C_00B7> from "<U004C><U00B7>"
% decomposition of LATIN CAPITAL LETTER L WITH MIDDLE DOT */
TEST_VERIFY (fnmatch ("[[.L\xc2\xb7.]]", ".", 0) != 0);
TEST_VERIFY (fnmatch ("[[.L\xc2\xb7.]]", "L\xc2\xb7", 0) == 0);
return 0;
}
#include <support/test-driver.c>