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Posted to issues@stdcxx.apache.org by "Stefan Teleman (JIRA)" <ji...@apache.org> on 2012/09/04 06:11:07 UTC
[jira] [Updated] (STDCXX-1066) SPARCV8 requires pthread_mutex_t and
pthread_cond_t to be aligned on an 8-byte boundary
[ https://issues.apache.org/jira/browse/STDCXX-1066?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stefan Teleman updated STDCXX-1066:
-----------------------------------
Attachment: _config-sunpro.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
>
>
> 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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