view modules/sysexits @ 37246:5cfb3a67238d

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>
author Eric Blake <eblake@redhat.com>
date Tue, 03 Dec 2013 10:34:13 -0700
parents aebcca9ddd62
children
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Description:
Exit status codes for some BSD system programs.

Files:
lib/sysexits.in.h
m4/sysexits.m4

Depends-on:
include_next
stdlib

configure.ac:
gl_SYSEXITS

Makefile.am:
BUILT_SOURCES += $(SYSEXITS_H)

# We need the following in order to create <sysexits.h> when the system
# doesn't have one that works with the given compiler.
if GL_GENERATE_SYSEXITS_H
sysexits.h: sysexits.in.h $(top_builddir)/config.status
	$(AM_V_GEN)rm -f $@-t $@ && \
	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
	  sed -e 's|@''GUARD_PREFIX''@|${gl_include_guard_prefix}|g' \
	      -e 's|@''HAVE_SYSEXITS_H''@|$(HAVE_SYSEXITS_H)|g' \
	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
	      -e 's|@''NEXT_SYSEXITS_H''@|$(NEXT_SYSEXITS_H)|g' \
	      < $(srcdir)/sysexits.in.h; \
	} > $@-t && \
	mv -f $@-t $@
else
sysexits.h: $(top_builddir)/config.status
	rm -f $@
endif
MOSTLYCLEANFILES += sysexits.h sysexits.h-t

Include:
<sysexits.h>

License:
LGPLv2+

Maintainer:
Simon Josefsson