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:
Iterating through multibyte strings.

Files:
lib/mbuiter.h
lib/mbuiter.c
m4/mbiter.m4
m4/mbrtowc.m4

Depends-on:
extern-inline
mbchar
mbrtowc
mbsinit
wchar
stdbool
strnlen1

configure.ac:
gl_MBITER

Makefile.am:
lib_SOURCES += mbuiter.h mbuiter.c

Include:
"mbuiter.h"

License:
LGPL

Maintainer:
Bruno Haible