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https://issues.apache.org/activemq/browse/AMQCPP-25?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_37895
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Albert Strasheim commented on AMQCPP-25:
----------------------------------------
We might consider using -Wstrict-aliasing=2. Warns in more cases, with some
chance of false positives.
I still get the following warnings with GCC 4.1.1 on FC6 with revision 495335:
{noformat}
activemq/network/ServerSocket.cpp: In member function 'virtual void
activemq::network::ServerSocket::bind(const char*, int, int)':
activemq/network/ServerSocket.cpp:162: warning: dereferencing type-punned
pointer might break strict-aliasing rules
activemq/network/ServerSocket.cpp: In member function 'virtual
activemq::network::Socket* activemq::network::ServerSocket::accept()':
activemq/network/ServerSocket.cpp:208: warning: dereferencing type-punned
pointer might break strict-aliasing rules
activemq/io/DataInputStreamTest.h:85: warning: dereferencing type-punned
pointer will break strict-aliasing rules
activemq/io/DataInputStreamTest.h:86: warning: dereferencing type-punned
pointer will break strict-aliasing rules
{noformat}
I noticed you used a memcpys to fix this issue. Did you consider trying a
union? Without knowing for certain (maybe we'll do some benchmarks tomorrow), a
union might be faster than a call to memcpy.
Anyway, tests pass on FC6. Thanks very much.
> Bus error on Solaris OS from DataInput and DataOutput streams
> -------------------------------------------------------------
>
> Key: AMQCPP-25
> URL: https://issues.apache.org/activemq/browse/AMQCPP-25
> Project: ActiveMQ C++ Client
> Issue Type: Bug
> Components: CMS Impl
> Affects Versions: 1.1
> Environment: Solaris 10 OS
> Reporter: Timothy Bish
> Assigned To: Timothy Bish
> Priority: Minor
> Fix For: 1.1
>
> Attachments: optobug.cpp
>
>
> Due to misaligned memory reads, there is a bus error that can occur in using
> the new DataInputStream and DataOutputStream classes.
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