Mercurial > gnulib
view modules/c-strcase-tests @ 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 | 36526f5676df |
children | f6ce7f5ed48d |
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Files: tests/test-c-strcase.sh tests/test-c-strcasecmp.c tests/test-c-strncasecmp.c tests/macros.h m4/locale-fr.m4 m4/locale-tr.m4 m4/codeset.m4 Depends-on: setlocale configure.ac: gt_LOCALE_FR gt_LOCALE_TR_UTF8 Makefile.am: TESTS += test-c-strcase.sh TESTS_ENVIRONMENT += LOCALE_FR='@LOCALE_FR@' LOCALE_TR_UTF8='@LOCALE_TR_UTF8@' check_PROGRAMS += test-c-strcasecmp test-c-strncasecmp