Mercurial > gnulib
view lib/gl_sublist.h @ 37246:5cfb3a67238d
regex: avoid glibc deadlock during configure
glibc has a known bug where certain corruptions of the heap can
cause malloc to default to printing a debug message that includes
a backtrace, but the act of getting the backtrace uses dlopen
which in turn calls into malloc, causing a recursive lock ending
in deadlock. Thus, when configure is probing for a known glibc
heap corruption bug, the overall configure would hang.
The solution suggested by glibc developers is to force malloc
to quit printing debug messages, which avoids recursive malloc.
* m4/regex.m4 (gl_REGEX): Avoid recursive malloc deadlock when
glibc bug 15078 in turn triggers bug 16159.
Reported by Michal Privoznik.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Tue, 03 Dec 2013 10:34:13 -0700 |
parents | c741bc27922a |
children | 344018b6e5d7 |
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/* Sequential list data type backed by another list. Copyright (C) 2006, 2009-2013 Free Software Foundation, Inc. Written by Bruno Haible <bruno@clisp.org>, 2006. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef _GL_SUBLIST_H #define _GL_SUBLIST_H #include "gl_list.h" #ifdef __cplusplus extern "C" { #endif /* Create a sublist of a given list. This is the list of elements with indices i, start_index <= i < end_index. The sublist is backed by the given list, which means: - Modifications to the sublist affect the whole list. - Modifications to the whole list are immediately visible in the sublist. - The sublist is only valid as long as the whole list is valid. - The sublist must not be passed to the gl_list_sortedlist_add() function. */ #if 0 /* declared in gl_xsublist.h */ extern gl_list_t gl_sublist_create (gl_list_t whole_list, size_t start_index, size_t end_index); #endif /* Likewise. Return NULL upon out-of-memory. */ extern gl_list_t gl_sublist_nx_create (gl_list_t whole_list, size_t start_index, size_t end_index); #ifdef __cplusplus } #endif #endif /* _GL_SUBLIST_H */