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Date: Tue, 4 Sep 2012 15:15:07 +1100 (NCT)
From: "Stefan Teleman (JIRA)" <jira@apache.org>
To: issues@stdcxx.apache.org
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Subject: [jira] [Updated] (STDCXX-1066) SPARCV8 requires pthread_mutex_t and
 pthread_cond_t to be aligned on an 8-byte boundary
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     [ https://issues.apache.org/jira/browse/STDCXX-1066?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefan Teleman updated STDCXX-1066:
-----------------------------------

    Attachment: _mutex.h.stdcxx-1066.patch
    
> SPARCV8 requires pthread_mutex_t and pthread_cond_t to be aligned on an 8-byte boundary
> ---------------------------------------------------------------------------------------
>
>                 Key: STDCXX-1066
>                 URL: https://issues.apache.org/jira/browse/STDCXX-1066
>             Project: C++ Standard Library
>          Issue Type: Bug
>          Components: Thread Safety
>    Affects Versions: 4.2.1, 4.2.2, 4.2.x, 4.3.x
>         Environment: Solaris 10 Update 6 or later on SPARCV8 [32-bit]
> Defect is compiler-independent - in reality it only affects Sun Studio and GCC.
>            Reporter: Stefan Teleman
>              Labels: features, runtime, threads
>             Fix For: 4.2.2, 4.2.x, 4.3.x
>
>         Attachments: _config-gcc.h.stdcxx-1066.patch, _config-sunpro.h.stdcxx-1066.patch, ctype.cpp.stdcxx-1066.patch, exception.cpp.stdcxx-1066.patch, ios.cpp.stdcxx-1066.patch, iostream.cpp.stdcxx-1066.patch, iostream.stdcxx-1066.patch, locale_body.cpp.stdcxx-1066.patch, locale_classic.cpp.stdcxx-1066.patch, messages.cpp.stdcxx-1066.patch, _mutex.h.stdcxx-1066.patch, _mutex.h.stdcxx-1066.patch
>
>
> Starting with Solaris 10 Update 6, on SPARCV8, pthread_mutex_t and pthread_cond_t MUST be aligned on an 8-byte boundary. Misaligned access will result in either SEGV or SIGBUS.
> There are numerous places in the multi-threaded version of stdcxx where pthread_mutex_t and/or pthread_cond_t types are contained within an union, but with an enforced alignment different than 8. All these instances must be corrected, and #ifdef-guarded for SPARCV8.
> Patches to follow shortly, this is just opening the issue.
> Warning: the patchset resolving this issue is very large, and it affects a large number of files.

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