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[BZ #13637] 

* posix/regex_internal.c (re_string_skip_chars): Fix miscomputation
	of remain_len that may cause incomplete multi-byte character and
	false match.
	* posix/bug-regex33.c: New file.
	* posix/Makefile (tests): Add bug-regex33.
This commit is contained in:
Stanislav Brabec 2012-02-28 16:16:45 +01:00 committed by Andreas Jaeger
parent 450bf206b4
commit 71b5d1c5d5
4 changed files with 132 additions and 2 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2012-02-28 Stanislav Brabec <sbrabec@suse.cz>
[BZ #13637]
* posix/regex_internal.c (re_string_skip_chars): Fix miscomputation
of remain_len that may cause incomplete multi-byte character and
false match.
* posix/bug-regex33.c: New file.
* posix/Makefile (tests): Add bug-regex33.
2012-02-28 Andreas Schwab <schwab@linux-m68k.org>
* include/dirent.h: Include <dirstream.h> before

3
posix/Makefile
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@ -82,7 +82,7 @@ tests := tstgetopt testfnm runtests runptests \
bug-regex21 bug-regex22 bug-regex23 bug-regex24 \
bug-regex25 bug-regex26 bug-regex27 bug-regex28 \
bug-regex29 bug-regex30 bug-regex31 bug-regex32 \
tst-nice tst-nanosleep tst-regex2 \
bug-regex33 tst-nice tst-nanosleep tst-regex2 \
transbug tst-rxspencer tst-pcre tst-boost \
bug-ga1 tst-vfork1 tst-vfork2 tst-vfork3 tst-waitid \
tst-getaddrinfo2 bug-glob1 bug-glob2 bug-glob3 tst-sysconf \
@ -208,6 +208,7 @@ bug-regex25-ENV = LOCPATH=$(common-objpfx)localedata
bug-regex26-ENV = LOCPATH=$(common-objpfx)localedata
bug-regex30-ENV = LOCPATH=$(common-objpfx)localedata
bug-regex32-ENV = LOCPATH=$(common-objpfx)localedata
bug-regex33-ENV = LOCPATH=$(common-objpfx)localedata
tst-rxspencer-ARGS = --utf8 rxspencer/tests
tst-rxspencer-ENV = LOCPATH=$(common-objpfx)localedata
tst-pcre-ARGS = PCRE.tests

120
posix/bug-regex33.c Normal file
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@ -0,0 +1,120 @@
/* Test re_search with multi-byte characters in EUC-JP.
Copyright (C) 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Stanislav Brabec <sbrabec@suse.cz>, 2012.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#define _GNU_SOURCE 1
#include <locale.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "regex_internal.h"
static int
do_test (void)
{
struct re_pattern_buffer r;
struct re_registers s;
int e, rc = 0;
if (setlocale (LC_CTYPE, "ja_JP.EUC-JP") == NULL)
{
puts ("setlocale failed");
return 1;
}
memset (&r, 0, sizeof (r));
memset (&s, 0, sizeof (s));
/* The bug cannot be reproduced without initialized fastmap. */
r.fastmap = malloc (SBC_MAX);
/* 圭 */
re_compile_pattern ("\xb7\xbd", 2, &r);
/* aaaaa件a新処, \xb7\xbd constitutes a false match */
e = re_search (&r, "\x61\x61\x61\x61\x61\xb7\xef\x61\xbf\xb7\xbd\xe8",
12, 0, 12, &s);
if (e != -1)
{
printf ("bug-regex33.1: false match or error: re_search() returned %d, should return -1\n", e);
rc = 1;
}
/* aaaa件a新処, \xb7\xbd constitutes a false match,
* this is a reproducer of BZ #13637 */
e = re_search (&r, "\x61\x61\x61\x61\xb7\xef\x61\xbf\xb7\xbd\xe8",
11, 0, 11, &s);
if (e != -1)
{
printf ("bug-regex33.2: false match or error: re_search() returned %d, should return -1\n", e);
rc = 1;
}
/* aaa件a新処, \xb7\xbd constitutes a false match,
* this is a reproducer of BZ #13637 */
e = re_search (&r, "\x61\x61\x61\xb7\xef\x61\xbf\xb7\xbd\xe8",
10, 0, 10, &s);
if (e != -1)
{
printf ("bug-regex33.3: false match or error: re_search() returned %d, should return -1\n", e);
rc = 1;
}
/* aa件a新処, \xb7\xbd constitutes a false match */
e = re_search (&r, "\x61\x61\xb7\xef\x61\xbf\xb7\xbd\xe8",
9, 0, 9, &s);
if (e != -1)
{
printf ("bug-regex33.4: false match or error: re_search() returned %d, should return -1\n", e);
rc = 1;
}
/* a件a新処, \xb7\xbd constitutes a false match */
e = re_search (&r, "\x61\xb7\xef\x61\xbf\xb7\xbd\xe8",
8, 0, 8, &s);
if (e != -1)
{
printf ("bug-regex33.5: false match or error: re_search() returned %d, should return -1\n", e);
rc = 1;
}
/* 新処圭新処, \xb7\xbd here really matches 圭, but second occurrence is a false match,
* this is a reproducer of bug-regex25 and BZ #13637 */
e = re_search (&r, "\xbf\xb7\xbd\xe8\xb7\xbd\xbf\xb7\xbd\xe8",
10, 0, 10, &s);
if (e != 4)
{
printf ("bug-regex33.6: no match or false match: re_search() returned %d, should return 4\n", e);
rc = 1;
}
/* 新処圭新, \xb7\xbd here really matches 圭,
* this is a reproducer of bug-regex25 */
e = re_search (&r, "\xbf\xb7\xbd\xe8\xb7\xbd\xbf\xb7",
10, 0, 10, &s);
if (e != 4)
{
printf ("bug-regex33.7: no match or false match: re_search() returned %d, should return 4\n", e);
rc = 1;
}
return rc;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"

2
posix/regex_internal.c
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@ -499,7 +499,7 @@ re_string_skip_chars (re_string_t *pstr, int new_raw_idx, wint_t *last_wc)
rawbuf_idx < new_raw_idx;)
{
wchar_t wc2;
int remain_len = pstr->len - rawbuf_idx;
int remain_len = pstr->raw_len - rawbuf_idx;
prev_st = pstr->cur_state;
mbclen = __mbrtowc (&wc2, (const char *) pstr->raw_mbs + rawbuf_idx,
remain_len, &pstr->cur_state);