view modules/sys_resource @ 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 2cb27ed59305
children 1f14c6dd175d
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Description:
A POSIX-like <sys/resource.h>.

Files:
lib/sys_resource.in.h
m4/sys_resource_h.m4

Depends-on:
include_next
snippet/arg-nonnull
snippet/c++defs
snippet/warn-on-use
sys_time

configure.ac:
gl_HEADER_SYS_RESOURCE
AC_PROG_MKDIR_P

Makefile.am:
BUILT_SOURCES += sys/resource.h

# We need the following in order to create <sys/resource.h> when the system
# doesn't have one.
sys/resource.h: sys_resource.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
	$(AM_V_at)$(MKDIR_P) sys
	$(AM_V_GEN)rm -f $@-t $@ && \
	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
	  sed -e 's|@''GUARD_PREFIX''@|${gl_include_guard_prefix}|g' \
	      -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
	      -e 's|@''NEXT_SYS_RESOURCE_H''@|$(NEXT_SYS_RESOURCE_H)|g' \
	      -e 's|@''HAVE_SYS_RESOURCE_H''@|$(HAVE_SYS_RESOURCE_H)|g' \
	      -e 's/@''GNULIB_GETRUSAGE''@/$(GNULIB_GETRUSAGE)/g' \
	      -e 's/@''HAVE_GETRUSAGE''@/$(HAVE_GETRUSAGE)/g' \
	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
	      < $(srcdir)/sys_resource.in.h; \
	} > $@-t && \
	mv -f $@-t $@
MOSTLYCLEANFILES += sys/resource.h sys/resource.h-t
MOSTLYCLEANDIRS += sys

Include:
<sys/resource.h>

License:
LGPL

Maintainer:
Bruno Haible