Stefan Teleman created STDCXX-1066:
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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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