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From Travis Vitek <>
Subject Re: [jira] [Closed] (STDCXX-1066) SPARCV8 requires pthread_mutex_t and pthread_cond_t to be aligned on an 8-byte boundary
Date Wed, 26 Sep 2012 04:24:00 GMT

I asked around and we don't have one available at this time.


Liviu Nicoara wrote:
On 9/25/12 7:56 PM, Stefan Teleman (JIRA) wrote:
>       [

Anybody around here, except Stefan, who has access to a SPARC V8 machine updated
to the specified kernel update or later, and who is willing to run a simple test
program? It's a 5 minute job at most.


> Stefan Teleman closed STDCXX-1066.
> ----------------------------------
>      Resolution: Won't Fix
> Bug will not be fixed upstream. It is fixed in the Solaris releases.
>> SPARCV8 requires pthread_mutex_t and pthread_cond_t to be aligned on an 8-byte boundary
>> ---------------------------------------------------------------------------------------
>>                  Key: STDCXX-1066
>>                  URL:
>>              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, time_put.cpp.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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