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:
An interface to the read() function that retries after interrupts.

Files:
lib/safe-read.h
lib/safe-read.c
m4/safe-read.m4

Depends-on:
read
ssize_t

configure.ac:
gl_PREREQ_SAFE_READ

Makefile.am:
lib_SOURCES += safe-read.c

Include:
"safe-read.h"

License:
LGPLv2+

Maintainer:
Jim Meyering, Bruno Haible