Mercurial > gnulib
view modules/vasnprintf-posix-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 | 359602c562e9 |
children |
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Files: tests/test-vasnprintf-posix.c tests/test-vasnprintf-posix2.sh tests/test-vasnprintf-posix2.c tests/test-vasnprintf-posix3.c tests/minus-zero.h tests/infinity.h tests/nan.h tests/macros.h m4/locale-fr.m4 m4/codeset.m4 Depends-on: stdint float setlocale configure.ac: AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) gt_LOCALE_FR gt_LOCALE_FR_UTF8 Makefile.am: TESTS += test-vasnprintf-posix test-vasnprintf-posix2.sh test-vasnprintf-posix3 TESTS_ENVIRONMENT += LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@' check_PROGRAMS += test-vasnprintf-posix test-vasnprintf-posix2 test-vasnprintf-posix3