Mercurial > gnulib
view modules/stdint @ 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 | e2f490eebebe |
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Description: A <stdint.h> that nearly conforms to C99. Assumes typical host with 8-bit bytes, two's complement representation, and no padding or trap representations, with int widths equal to 8, 16, 32, and 64 bits. {uint,int}_fast{8,16,32,64}_t may not correspond to the fastest types available on the system. Macros are used instead of typedefs. Files: lib/stdint.in.h m4/stdint.m4 m4/longlong.m4 Depends-on: include_next multiarch configure.ac: gl_STDINT_H Makefile.am: BUILT_SOURCES += $(STDINT_H) # We need the following in order to create <stdint.h> when the system # doesn't have one that works with the given compiler. if GL_GENERATE_STDINT_H stdint.h: stdint.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_STDINT_H''@/$(HAVE_STDINT_H)/g' \ -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \ -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \ -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \ -e 's|@''NEXT_STDINT_H''@|$(NEXT_STDINT_H)|g' \ -e 's/@''HAVE_SYS_TYPES_H''@/$(HAVE_SYS_TYPES_H)/g' \ -e 's/@''HAVE_INTTYPES_H''@/$(HAVE_INTTYPES_H)/g' \ -e 's/@''HAVE_SYS_INTTYPES_H''@/$(HAVE_SYS_INTTYPES_H)/g' \ -e 's/@''HAVE_SYS_BITYPES_H''@/$(HAVE_SYS_BITYPES_H)/g' \ -e 's/@''HAVE_WCHAR_H''@/$(HAVE_WCHAR_H)/g' \ -e 's/@''HAVE_LONG_LONG_INT''@/$(HAVE_LONG_LONG_INT)/g' \ -e 's/@''HAVE_UNSIGNED_LONG_LONG_INT''@/$(HAVE_UNSIGNED_LONG_LONG_INT)/g' \ -e 's/@''APPLE_UNIVERSAL_BUILD''@/$(APPLE_UNIVERSAL_BUILD)/g' \ -e 's/@''BITSIZEOF_PTRDIFF_T''@/$(BITSIZEOF_PTRDIFF_T)/g' \ -e 's/@''PTRDIFF_T_SUFFIX''@/$(PTRDIFF_T_SUFFIX)/g' \ -e 's/@''BITSIZEOF_SIG_ATOMIC_T''@/$(BITSIZEOF_SIG_ATOMIC_T)/g' \ -e 's/@''HAVE_SIGNED_SIG_ATOMIC_T''@/$(HAVE_SIGNED_SIG_ATOMIC_T)/g' \ -e 's/@''SIG_ATOMIC_T_SUFFIX''@/$(SIG_ATOMIC_T_SUFFIX)/g' \ -e 's/@''BITSIZEOF_SIZE_T''@/$(BITSIZEOF_SIZE_T)/g' \ -e 's/@''SIZE_T_SUFFIX''@/$(SIZE_T_SUFFIX)/g' \ -e 's/@''BITSIZEOF_WCHAR_T''@/$(BITSIZEOF_WCHAR_T)/g' \ -e 's/@''HAVE_SIGNED_WCHAR_T''@/$(HAVE_SIGNED_WCHAR_T)/g' \ -e 's/@''WCHAR_T_SUFFIX''@/$(WCHAR_T_SUFFIX)/g' \ -e 's/@''BITSIZEOF_WINT_T''@/$(BITSIZEOF_WINT_T)/g' \ -e 's/@''HAVE_SIGNED_WINT_T''@/$(HAVE_SIGNED_WINT_T)/g' \ -e 's/@''WINT_T_SUFFIX''@/$(WINT_T_SUFFIX)/g' \ < $(srcdir)/stdint.in.h; \ } > $@-t && \ mv $@-t $@ else stdint.h: $(top_builddir)/config.status rm -f $@ endif MOSTLYCLEANFILES += stdint.h stdint.h-t Include: <stdint.h> License: LGPLv2+ Maintainer: all