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:
Read a symbolic link, without size limitations, relative to fd.

Files:
lib/areadlink.h
lib/areadlinkat-with-size.c
lib/at-func.c

Depends-on:
areadlink-with-size
stdint
readlinkat
at-internal
dosname
errno
extensions
fchdir
fcntl-h
openat-die
openat-h
save-cwd
unistd

configure.ac:
gl_MODULE_INDICATOR([areadlinkat-with-size])

Makefile.am:
lib_SOURCES += areadlinkat-with-size.c

Include:
"areadlink.h"

License:
GPL

Maintainer:
Jim Meyering, Eric Blake