547bc083d6
This fixes the obscure endless loop seen with case-insensitive patterns containing characters in 128-255 range; originally found running GNU grep test suite. Our regex implementation being kludgy translates the characters in case-insensitive pattern to bracket expression containing both cases for the character and doesn't correctly handle the case when original character is in bitmap and the other case is not, falling into the endless loop going through in p_bracket(), ordinary(), and bothcases(). Reducing the bitmap to 0-127 range for multibyte locales solves this as none of these characters have other case mapping outside of bitmap. We are also safe in the case when the original character outside of bitmap has other case mapping in the bitmap (there are several of those in our current ctype maps having unidirectional mapping into bitmap). Reviewed by: bapt, kevans, pfg Differential revision: https://reviews.freebsd.org/D18302
59 lines
2.3 KiB
C
59 lines
2.3 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1992, 1993, 1994 Henry Spencer.
|
|
* Copyright (c) 1992, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Henry Spencer.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)utils.h 8.3 (Berkeley) 3/20/94
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/* utility definitions */
|
|
#define DUPMAX _POSIX2_RE_DUP_MAX /* xxx is this right? */
|
|
#define INFINITY (DUPMAX + 1)
|
|
|
|
#define NC_MAX (CHAR_MAX - CHAR_MIN + 1)
|
|
#define NC ((MB_CUR_MAX) == 1 ? (NC_MAX) : (128))
|
|
typedef unsigned char uch;
|
|
|
|
/* switch off assertions (if not already off) if no REDEBUG */
|
|
#ifndef REDEBUG
|
|
#ifndef NDEBUG
|
|
#define NDEBUG /* no assertions please */
|
|
#endif
|
|
#endif
|
|
#include <assert.h>
|
|
|
|
/* for old systems with bcopy() but no memmove() */
|
|
#ifdef USEBCOPY
|
|
#define memmove(d, s, c) bcopy(s, d, c)
|
|
#endif
|