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| author | Ulrich Drepper <drepper@redhat.com> | 2005-11-16 23:32:52 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2005-11-16 23:32:52 +0000 |
| commit | e6e493bbc4a8122acfba53ecf719e10d82974aa3 (patch) | |
| tree | 7379699c602476bce67141da03cd376533da92e9 | |
| parent | 510afb6420c517607d7084b40998ebd06a73c69d (diff) | |
| download | glibc-e6e493bbc4a8122acfba53ecf719e10d82974aa3.tar.gz glibc-e6e493bbc4a8122acfba53ecf719e10d82974aa3.tar.xz glibc-e6e493bbc4a8122acfba53ecf719e10d82974aa3.zip | |
* sysdeps/pthread/unwind-forcedunwind.c (pthread_cancel_init): Put
a write barrier before writing libgcc_s_getcfa.
| -rw-r--r-- | nptl/ChangeLog | 5 | ||||
| -rw-r--r-- | nptl/sysdeps/pthread/unwind-forcedunwind.c | 6 |
2 files changed, 10 insertions, 1 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index db084dfcc2..2b76775bcc 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -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> * sysdeps/unix/sysv/linux/configure: Removed. diff --git a/nptl/sysdeps/pthread/unwind-forcedunwind.c b/nptl/sysdeps/pthread/unwind-forcedunwind.c index b0f8487086..9a38704aeb 100644 --- a/nptl/sysdeps/pthread/unwind-forcedunwind.c +++ b/nptl/sysdeps/pthread/unwind-forcedunwind.c @@ -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. Contributed by Jakub Jelinek <jakub@redhat.com>. @@ -56,6 +56,10 @@ pthread_cancel_init (void) libgcc_s_resume = resume; libgcc_s_personality = personality; 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; } |