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Fix handling of collating symbols in regexps

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This commit is contained in:
Andreas Schwab 2013-02-04 10:16:33 +01:00
parent a175b684e2
commit 7e2f0d2d77
5 changed files with 92 additions and 48 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2013-02-12 Andreas Schwab <schwab@suse.de>
[BZ #11561]
* posix/regcomp.c (parse_bracket_exp): When looking up collating
elements compare against the byte sequence of it, not its name.
* posix/Makefile (tests): Add bug-regex35.
(bug-regex35-ENV): Define.
* posix/bug-regex35.c: New file.
2013-02-11 Tom de Vries <tom@codesourcery.com>
* string/str-two-way.h: Fix typo RESULT_TYPE -> RETURN_TYPE in

4
NEWS
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@ -9,8 +9,8 @@ Version 2.18
* The following bugs are resolved with this release:
13951, 14142, 14200, 14317, 14327, 14496, 14964, 14981, 14982, 14985,
14994, 14996, 15003, 15006, 15020, 15023, 15036, 15054, 15062.
11561, 13951, 14142, 14200, 14317, 14327, 14496, 14964, 14981, 14982,
14985, 14994, 14996, 15003, 15006, 15020, 15023, 15036, 15054, 15062.
Version 2.17

3
posix/Makefile
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@ -86,7 +86,7 @@ tests := tstgetopt testfnm runtests runptests \
tst-rfc3484-3 \
tst-getaddrinfo3 tst-fnmatch2 tst-cpucount tst-cpuset \
bug-getopt1 bug-getopt2 bug-getopt3 bug-getopt4 \
bug-getopt5 tst-getopt_long1
bug-getopt5 tst-getopt_long1 bug-regex35
xtests := bug-ga2
ifeq (yes,$(build-shared))
test-srcs := globtest
@ -199,6 +199,7 @@ bug-regex26-ENV = LOCPATH=$(common-objpfx)localedata
bug-regex30-ENV = LOCPATH=$(common-objpfx)localedata
bug-regex32-ENV = LOCPATH=$(common-objpfx)localedata
bug-regex33-ENV = LOCPATH=$(common-objpfx)localedata
bug-regex35-ENV = LOCPATH=$(common-objpfx)localedata
tst-rxspencer-ARGS = --utf8 rxspencer/tests
tst-rxspencer-ENV = LOCPATH=$(common-objpfx)localedata
tst-pcre-ARGS = PCRE.tests

52
posix/bug-regex35.c Normal file
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@ -0,0 +1,52 @@
/* Test regcomp with collating symbols in bracket expressions
Copyright (C) 2013 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
<http://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <string.h>
#include <locale.h>
#include <regex.h>
static int
do_test (void)
{
regex_t r;
if (setlocale (LC_ALL, "cs_CZ.UTF-8") == NULL)
{
puts ("setlocale failed");
return 1;
}
if (regcomp (&r, "[[.ch.]]", REG_NOSUB) != 0)
{
puts ("regcomp failed");
return 1;
}
if (regexec (&r, "ch", 0, 0, 0) != 0)
{
puts ("regexec failed");
return 1;
}
regfree (&r);
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"

72
posix/regcomp.c
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@ -2776,40 +2776,29 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
/* Local function for parse_bracket_exp used in _LIBC environement.
Seek the collating symbol entry correspondings to NAME.
Return the index of the symbol in the SYMB_TABLE. */
Return the index of the symbol in the SYMB_TABLE,
or -1 if not found. */
auto inline int32_t
__attribute ((always_inline))
seek_collating_symbol_entry (name, name_len)
const unsigned char *name;
size_t name_len;
seek_collating_symbol_entry (const unsigned char *name, size_t name_len)
{
int32_t hash = elem_hash ((const char *) name, name_len);
int32_t elem = hash % table_size;
if (symb_table[2 * elem] != 0)
{
int32_t second = hash % (table_size - 2) + 1;
int32_t elem;
do
{
/* First compare the hashing value. */
if (symb_table[2 * elem] == hash
/* Compare the length of the name. */
&& name_len == extra[symb_table[2 * elem + 1]]
/* Compare the name. */
&& memcmp (name, &extra[symb_table[2 * elem + 1] + 1],
name_len) == 0)
{
/* Yep, this is the entry. */
break;
}
/* Next entry. */
elem += second;
}
while (symb_table[2 * elem] != 0);
}
return elem;
for (elem = 0; elem < table_size; elem++)
if (symb_table[2 * elem] != 0)
{
int32_t idx = symb_table[2 * elem + 1];
/* Skip the name of collating element name. */
idx += 1 + extra[idx];
if (/* Compare the length of the name. */
name_len == extra[idx]
/* Compare the name. */
&& memcmp (name, &extra[idx + 1], name_len) == 0)
/* Yep, this is the entry. */
return elem;
}
return -1;
}
/* Local function for parse_bracket_exp used in _LIBC environment.
@ -2818,8 +2807,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
auto inline unsigned int
__attribute ((always_inline))
lookup_collation_sequence_value (br_elem)
bracket_elem_t *br_elem;
lookup_collation_sequence_value (bracket_elem_t *br_elem)
{
if (br_elem->type == SB_CHAR)
{
@ -2847,7 +2835,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
int32_t elem, idx;
elem = seek_collating_symbol_entry (br_elem->opr.name,
sym_name_len);
if (symb_table[2 * elem] != 0)
if (elem != -1)
{
/* We found the entry. */
idx = symb_table[2 * elem + 1];
@ -2865,7 +2853,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
/* Return the collation sequence value. */
return *(unsigned int *) (extra + idx);
}
else if (symb_table[2 * elem] == 0 && sym_name_len == 1)
else if (sym_name_len == 1)
{
/* No valid character. Match it as a single byte
character. */
@ -2887,11 +2875,8 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
auto inline reg_errcode_t
__attribute ((always_inline))
build_range_exp (sbcset, mbcset, range_alloc, start_elem, end_elem)
re_charset_t *mbcset;
int *range_alloc;
bitset_t sbcset;
bracket_elem_t *start_elem, *end_elem;
build_range_exp (bitset_t sbcset, re_charset_t *mbcset, int *range_alloc,
bracket_elem_t *start_elem, bracket_elem_t *end_elem)
{
unsigned int ch;
uint32_t start_collseq;
@ -2970,25 +2955,22 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
auto inline reg_errcode_t
__attribute ((always_inline))
build_collating_symbol (sbcset, mbcset, coll_sym_alloc, name)
re_charset_t *mbcset;
int *coll_sym_alloc;
bitset_t sbcset;
const unsigned char *name;
build_collating_symbol (bitset_t sbcset, re_charset_t *mbcset,
int *coll_sym_alloc, const unsigned char *name)
{
int32_t elem, idx;
size_t name_len = strlen ((const char *) name);
if (nrules != 0)
{
elem = seek_collating_symbol_entry (name, name_len);
if (symb_table[2 * elem] != 0)
if (elem != -1)
{
/* We found the entry. */
idx = symb_table[2 * elem + 1];
/* Skip the name of collating element name. */
idx += 1 + extra[idx];
}
else if (symb_table[2 * elem] == 0 && name_len == 1)
else if (name_len == 1)
{
/* No valid character, treat it as a normal
character. */