Fix handling of collating symbols in fnmatch (bug 26620)
Commit Message
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.
---
posix/Makefile | 3 ++-
posix/fnmatch_loop.c | 4 ++--
posix/tst-fnmatch6.c | 36 ++++++++++++++++++++++++++++++++++++
3 files changed, 40 insertions(+), 3 deletions(-)
create mode 100644 posix/tst-fnmatch6.c
Comments
* Andreas Schwab:
> 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.
Based on the surrounding code, the change looks correct to me. Thanks
for fixing this.
The test case could use xsetlocale, I think.
Florian
On Sep 16 2020, Florian Weimer wrote:
> The test case could use xsetlocale, I think.
Installed with that change.
Thanks, Andreas.
@@ -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)
@@ -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. */
new file mode 100644
@@ -0,0 +1,36 @@
+/* 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>
+
+static int
+do_test (void)
+{
+ TEST_VERIFY_EXIT (setlocale (LC_ALL, "en_US.UTF-8") != NULL);
+ /* 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>