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:
Canonicalize a host name: return a name other hosts can understand, i.e.
usually the host name including FQDN.

Files:
lib/canon-host.c
lib/canon-host.h
m4/canon-host.m4

Depends-on:
getaddrinfo
strdup

configure.ac:
gl_PREREQ_CANON_HOST

Makefile.am:
lib_SOURCES += canon-host.c

Include:
"canon-host.h"

Link:
$(GETADDRINFO_LIB)

License:
LGPL

Maintainer:
Jim Meyering