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* sysdeps/pthread/unwind-forcedunwind.c (pthread_cancel_init): Put 

a write barrier before writing libgcc_s_getcfa.
This commit is contained in:
Ulrich Drepper 2005-11-16 23:32:52 +00:00
parent 510afb6420
commit e6e493bbc4
2 changed files with 10 additions and 1 deletions
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5
nptl/ChangeLog
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@ -1,3 +1,8 @@
2005-11-17 Jakub Jelinek <jakub@redhat.com>
* sysdeps/pthread/unwind-forcedunwind.c (pthread_cancel_init): Put
a write barrier before writing libgcc_s_getcfa.
2005-11-06 Ulrich Drepper <drepper@redhat.com> 2005-11-06 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/configure: Removed. * sysdeps/unix/sysv/linux/configure: Removed.

6
nptl/sysdeps/pthread/unwind-forcedunwind.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2003 Free Software Foundation, Inc. /* Copyright (C) 2003, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>. Contributed by Jakub Jelinek <jakub@redhat.com>.
@ -56,6 +56,10 @@ pthread_cancel_init (void)
libgcc_s_resume = resume; libgcc_s_resume = resume;
libgcc_s_personality = personality; libgcc_s_personality = personality;
libgcc_s_forcedunwind = forcedunwind; libgcc_s_forcedunwind = forcedunwind;
/* Make sure libgcc_s_getcfa is written last. Otherwise,
pthread_cancel_init might return early even when the pointer the
caller is interested in is not initialized yet. */
atomic_write_barrier ();
libgcc_s_getcfa = getcfa; libgcc_s_getcfa = getcfa;
} }