view lib/readtokens.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
line wrap: on
line source

/* readtokens.h -- Functions for reading tokens from an input stream.

   Copyright (C) 1990-1991, 1999, 2001-2004, 2009-2013 Free Software
   Foundation, Inc.

   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/>.

   Written by Jim Meyering. */

#ifndef READTOKENS_H
# define READTOKENS_H

# include <stdio.h>

struct tokenbuffer
{
  size_t size;
  char *buffer;
};
typedef struct tokenbuffer token_buffer;

void init_tokenbuffer (token_buffer *tokenbuffer);

size_t
  readtoken (FILE *stream, const char *delim, size_t n_delim,
             token_buffer *tokenbuffer);
size_t
  readtokens (FILE *stream, size_t projected_n_tokens,
              const char *delim, size_t n_delim,
              char ***tokens_out, size_t **token_lengths);

#endif /* not READTOKENS_H */