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>

Description:
Creation of autonomous subprocesses.

Files:
lib/execute.h
lib/execute.c
lib/w32spawn.h
m4/execute.m4

Depends-on:
cloexec
dup2
error
fatal-signal
wait-process
gettext-h
msvc-nothrow
spawn
posix_spawnp
posix_spawn_file_actions_init
posix_spawn_file_actions_addopen
posix_spawn_file_actions_destroy
posix_spawnattr_init
posix_spawnattr_setsigmask
posix_spawnattr_setflags
posix_spawnattr_destroy
stdbool
stdlib
strpbrk
unistd
environ

configure.ac:
gl_EXECUTE

Makefile.am:
lib_SOURCES += execute.h execute.c w32spawn.h

Include:
"execute.h"

License:
GPL

Maintainer:
Bruno Haible