Mercurial > gnulib
view modules/select @ 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 | dce417a27918 |
children |
line wrap: on
line source
Description: select() function: synchronous I/O multiplexing. Files: lib/select.c m4/select.m4 Depends-on: sys_select alloca [test $REPLACE_SELECT = 1] dup2 [test $REPLACE_SELECT = 1] sockets [test $REPLACE_SELECT = 1] sys_time [test $REPLACE_SELECT = 1] msvc-nothrow [test $REPLACE_SELECT = 1] configure.ac: gl_FUNC_SELECT if test $REPLACE_SELECT = 1; then AC_LIBOBJ([select]) fi gl_SYS_SELECT_MODULE_INDICATOR([select]) Makefile.am: Include: <sys/select.h> Link: $(LIB_SELECT) License: LGPLv2+ Maintainer: Simon Josefsson