[Bug nptl/16657] Lock elision breaks pthread_mutex_destroy

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16657

--- Comment #27 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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The branch, azanella/lockelision-ppc has been created
        at  01f9a2bfda7e99ed3a95250a24b7bf45c25bca94 (commit)

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=01f9a2bfda7e99ed3a95250a24b7bf45c25bca94

commit 01f9a2bfda7e99ed3a95250a24b7bf45c25bca94
Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date:   Mon Aug 18 17:34:00 2014 -0400

    powerpc32 fixes

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=558b909b2189cc79292fb719134b26565b10cd46

commit 558b909b2189cc79292fb719134b26565b10cd46
Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date:   Wed Jun 25 15:13:46 2014 -0400

    PowerPC: Add adaptive elision to rwlocks

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3b5afff081da3beb1a047b9face01e9426327c05

commit 3b5afff081da3beb1a047b9face01e9426327c05
Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date:   Fri Mar 21 08:26:59 2014 -0400

    PowerPC: Adjusting LE mutex destroy

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e6c831927e22129641abaf09aff278584937f448

commit e6c831927e22129641abaf09aff278584937f448
Author: Andreas Schwab <schwab@suse.de>
Date:   Thu Mar 27 16:50:04 2014 -0400

    Skip checks in pthread_mutex_destroy when doing elision

    When doing elisison the __nusers field is not updated, thus can have an
    arbitrary value.

        [BZ #16657]
        * nptl/pthread_mutex_destroy.c (__pthread_mutex_destroy): Skip
        checks when doing elision.
        * nptl/sysdeps/unix/sysv/linux/x86/pthread_mutex_destroy.c: New
        * file.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c3f96a10ee7cb19af1dcc9353e3a52ddebd8c87b

commit c3f96a10ee7cb19af1dcc9353e3a52ddebd8c87b
Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date:   Fri Dec 13 15:59:35 2013 -0500

    PowerPC: Add the low level infrastructure for pthreads lock elision

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