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From "Stefan Teleman (JIRA)" <j...@apache.org>
Subject [jira] [Created] (STDCXX-1066) SPARCV8 requires pthread_mutex_t and pthread_cond_t to be aligned on an 8-byte boundary
Date Fri, 31 Aug 2012 19:23:07 GMT
Stefan Teleman created STDCXX-1066:
--------------------------------------

             Summary: 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
             Fix For: 4.2.2, 4.2.x, 4.3.x


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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