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view modules/stdbool @ 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 | da2a4fc52ded |
children | 6758fa38915e 1f14c6dd175d |
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Description: An <stdbool.h> that nearly conforms to C99. (Nearly: casts to bool may not work.) Files: lib/stdbool.in.h m4/stdbool.m4 Depends-on: configure.ac: AM_STDBOOL_H Makefile.am: BUILT_SOURCES += $(STDBOOL_H) # We need the following in order to create <stdbool.h> when the system # doesn't have one that works. if GL_GENERATE_STDBOOL_H stdbool.h: stdbool.in.h $(top_builddir)/config.status $(AM_V_GEN)rm -f $@-t $@ && \ { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \ sed -e 's/@''HAVE__BOOL''@/$(HAVE__BOOL)/g' < $(srcdir)/stdbool.in.h; \ } > $@-t && \ mv $@-t $@ else stdbool.h: $(top_builddir)/config.status rm -f $@ endif MOSTLYCLEANFILES += stdbool.h stdbool.h-t Include: <stdbool.h> License: LGPLv2+ Maintainer: Bruno Haible