From: Yang Yingliang <yangyingli...@huawei.com> I use uclibc in arch arm. The CFLAGS-pthread_once.c has been set to -DNOT_IN_libc -DIS_IN_libpthread in libpthread/nptl/sysdeps/unix/sysv/linux/arm/Makefile.arch. But it will be replaced by -fexceptions -fasynchronous-unwind-tables in libpthread/nptl/Makefile.in.
If CFLAGS-pthread_once.c has no -DIS_IN_libpthread the testcase tst-once3 in test/nptl/ will be failed. The reason is pthread_once calls another pthread_cleanup_push() which is not under IS_IN_libpthread so that clear_once_control do not be called when the thread is canceled. So pthread_once will hang up when it's called second time. Other parts don't have this problem, because IS_IN_libpthread is defined by CFLAGS-nptl = -DNOT_IN_libc -DIS_IN_libpthread $(SSP_ALL_CFLAGS), CFLAGS-pthread = $(SSP_ALL_CFLAGS) -DNOT_IN_libc -DIS_IN_libpthread, CFLAGS-dir_linuxthreads := -DNOT_IN_libc -DIS_IN_libpthread and CFLAGS-dir_linuxthreads.old := -DNOT_IN_libc -DIS_IN_libpthread. Cc: Waldemar Brodkorb <w...@openadk.org> Cc: Bernhard Reutner-Fischer <rep.dot....@gmail.com> Tested-by: Waldemar Brodkorb <w...@openadk.org> Signed-off-by: Yang Yingliang <yangyingli...@huawei.com> --- Change note: Update changelog to describe other parts' IS_IN_libpthread. Add Tested-by: Waldemar Brodkorb <w...@openadk.org>. --- libpthread/nptl/Makefile.in | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libpthread/nptl/Makefile.in b/libpthread/nptl/Makefile.in index 0008822..1b9ba8c 100644 --- a/libpthread/nptl/Makefile.in +++ b/libpthread/nptl/Makefile.in @@ -186,7 +186,7 @@ CFLAGS-forward.c = -fexceptions CFLAGS-pthread_testcancel.c = -fexceptions CFLAGS-pthread_join.c = -fexceptions -fasynchronous-unwind-tables CFLAGS-pthread_timedjoin.c = -fexceptions -fasynchronous-unwind-tables -CFLAGS-pthread_once.c = $(uses-callbacks) -fexceptions \ +CFLAGS-pthread_once.c += $(uses-callbacks) -fexceptions \ -fasynchronous-unwind-tables CFLAGS-pthread_cond_wait.c = -fexceptions -fasynchronous-unwind-tables CFLAGS-pthread_cond_timedwait.c = -fexceptions -fasynchronous-unwind-tables -- 1.8.0 . _______________________________________________ uClibc mailing list uClibc@uclibc.org http://lists.busybox.net/mailman/listinfo/uclibc