CLONE -Transacted session crashes or loses messages
---------------------------------------------------

                 Key: AMQCPP-135
                 URL: https://issues.apache.org/activemq/browse/AMQCPP-135
             Project: ActiveMQ C++ Client
          Issue Type: Bug
    Affects Versions: 2.1
            Reporter: George payton
            Assignee: Timothy Bish
             Fix For: 2.1


Attached is some code that does a few things with transacted sessions, in a 
loop. This sometimes reproduces the crash I mentioned in one of my latest 
comments in AMQCPP-122.

I'm testing on Windows XP SP2 with Visual Studio 8 on Core 2 Duo machine.

I've also seen all of the following happen in subsequent runs of the code:

- Where I expect to receive a message, nothing turns up (even with a long 
timeout period). Cleanup goes fine.

- Where I expect to receive a message, nothing turns up. Cleanup hangs.

- Sometimes it prints:

Mutex::unlock - Failed, not Lock Owner!
        FILE: ..\src\main\activemq\concurrent\Mutex.cpp, LINE: 83
        FILE: activemq-cpp\src\main\activemq/concurrent/Lock.h, LINE: 110
        FILE: ..\src\main\activemq\core\ActiveMQConsumer.cpp, LINE: 443
        FILE: ..\src\main\activemq\core\ActiveMQSessionExecutor.cpp, LINE: 192

and keeps on going

- Sometimes it crashes with the following when running a Debug build on Windows:

---------------------------
Microsoft Visual C++ Debug Library
---------------------------
Debug Assertion Failed!

Program: ...
File: C:\Program Files\Microsoft Visual Studio 8\VC\include\list
Line: 776

Expression: list erase iterator outside range

For information on how your program can cause an assertion
failure, see the Visual C++ documentation on asserts.

(Press Retry to debug the application)
---------------------------
Abort   Retry   Ignore   
---------------------------

- Sometimes it crashes with something along these lines:

---------------------------
vs2005-activemq-example.exe - Application Error
---------------------------
The instruction at "0x0053dd80" referenced memory at "0xdddddddd". The memory 
could not be "read".


Click on OK to terminate the program
Click on CANCEL to debug the program
---------------------------
OK   Cancel   
---------------------------

The relevant thread's stack trace looks like this:

>       vs2005-activemq-example.exe!activemq::core::ActiveMQSession::close()  
> Line 110 + 0x8 bytes      C++
        
vs2005-activemq-example.exe!activemq::core::ActiveMQSession::~ActiveMQSession() 
 Line 74 + 0x8 bytes    C++
        vs2005-activemq-example.exe!activemq::core::ActiveMQSession::`scalar 
deleting destructor'()  + 0xf bytes        C++
        vs2005-activemq-example.exe!test_transaction(const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & 
url="tcp://localhost:61613?wireFormat=stomp")  Line 78 + 0x37 bytes   C++
        vs2005-activemq-example.exe!main(int argc=1, char * * argv=0x003558c8)  
Line 85 + 0x30 bytes    C++
        vs2005-activemq-example.exe!__tmainCRTStartup()  Line 597 + 0x19 bytes  
C
        vs2005-activemq-example.exe!mainCRTStartup()  Line 414  C

It crashes where it's doing resource->close() because resource points to 
garbage.

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