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:
posix_spawnp() function: create a child process.

Files:
lib/spawnp.c
m4/posix_spawn.m4

Depends-on:
spawn
posix_spawn-internal [test $HAVE_POSIX_SPAWN = 0 || test $REPLACE_POSIX_SPAWN = 1]

configure.ac:
gl_POSIX_SPAWN
if test $HAVE_POSIX_SPAWN = 0 || test $REPLACE_POSIX_SPAWN = 1; then
  AC_LIBOBJ([spawnp])
  AC_LIBOBJ([spawni])
  gl_PREREQ_POSIX_SPAWN_INTERNAL
fi
gl_SPAWN_MODULE_INDICATOR([posix_spawnp])

Makefile.am:

Include:
<spawn.h>

License:
LGPLv2+

Maintainer:
Bruno Haible, glibc