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From "Timothy Bish (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (AMQCPP-481) NullPointerException while handling broker exception
Date Wed, 08 May 2013 20:05:17 GMT

     [ https://issues.apache.org/jira/browse/AMQCPP-481?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Timothy Bish closed AMQCPP-481.
-------------------------------


Thanks for closing the loop.
                
> NullPointerException while handling broker exception
> ----------------------------------------------------
>
>                 Key: AMQCPP-481
>                 URL: https://issues.apache.org/jira/browse/AMQCPP-481
>             Project: ActiveMQ C++ Client
>          Issue Type: Bug
>    Affects Versions: 3.5.0
>            Reporter: Martin Lichtin
>            Assignee: Timothy Bish
>             Fix For: 3.6.0
>
>
> (Running with a modified library that aborts in case of a NullPointerException.)
> (gdb) bt
> #0  0x000000397b030265 in raise () from /lib64/libc.so.6
> #1  0x000000397b031d10 in abort () from /lib64/libc.so.6
> #2  0x00002aebc6308b48 in decaf::lang::Pointer<decaf::lang::Exception, decaf::util::concurrent::atomic::AtomicRefCounter>::operator->
(this=0x15b32da8) at ./decaf/lang/Pointer.h:264
> #3  0x00002aebc63065ad in activemq::commands::BrokerError::createExceptionObject (this=0x15b32d50)
at activemq/commands/BrokerError.cpp:128
> #4  0x00002aebc634956e in activemq::core::ActiveMQConnection::syncRequest (this=0x2aaaac037600,
command=..., timeout=0) at activemq/core/ActiveMQConnection.cpp:1251
> #5  0x00002aebc634b55b in activemq::core::ActiveMQConnection::asyncRequest (this=0x2aaaac037600,
command=..., onComplete=0x0) at activemq/core/ActiveMQConnection.cpp:1275
> #6  0x00002aebc6431de4 in activemq::core::kernels::ActiveMQSessionKernel::send (this=0x2aaaac03daa0,
producer=0x2aaaac040800, destination=..., message=0x2aaaac0574b0, deliveryMode=0, priority=4,
timeToLive=0, producerWindow=0x0,
>     sendTimeout=0, onComplete=0x0) at activemq/core/kernels/ActiveMQSessionKernel.cpp:985
> #7  0x00002aebc64254e8 in activemq::core::kernels::ActiveMQProducerKernel::send (this=0x2aaaac040800,
destination=0x2aaaac040068, message=0x2aaaac0574b0, deliveryMode=0, priority=4, timeToLive=0,
onComplete=0x0)
>     at activemq/core/kernels/ActiveMQProducerKernel.cpp:269
> #8  0x00002aebc6423c99 in activemq::core::kernels::ActiveMQProducerKernel::send (this=0x2aaaac040800,
message=0x2aaaac0574b0) at activemq/core/kernels/ActiveMQProducerKernel.cpp:139
> #9  0x00002aebc63cc270 in activemq::core::ActiveMQProducer::send (this=0x2aaaac040de0,
message=0x2aaaac0574b0) at activemq/core/ActiveMQProducer.cpp:62
> etc...
> (gdb) frame 3
> #3  0x00002aebc63065ad in activemq::commands::BrokerError::createExceptionObject (this=0x15b32d50)
at activemq/commands/BrokerError.cpp:128
> 128                 cause = new cms::CMSException(this->exCause->getMessage());
> (gdb) p *this
> $10 = {<activemq::commands::BaseCommand> = {<activemq::commands::Command>
= {<activemq::commands::BaseDataStructure> = {<activemq::commands::DataStructure>
= {<activemq::wireformat::MarshalAware> = {
>             _vptr.MarshalAware = 0x2aebc6c88230}, <No data fields>}, <No data
fields>}, <No data fields>}, responseRequired = false, commandId = 0}, message =
{static npos = 18446744073709551615,
>     _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>>
= {<No data fields>}, <No data fields>}, _M_p = 0x15b2f528 "malformed input around
byte 0"}}, exceptionClass = {static npos = 18446744073709551615,
>     _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>>
= {<No data fields>}, <No data fields>}, _M_p = 0x15b2f4e8 "java.io.UTFDataFormatException"}},
>   stackTraceElements = {<std::_Vector_base<decaf::lang::Pointer<activemq::commands::BrokerError::StackTraceElement,
decaf::util::concurrent::atomic::AtomicRefCounter>, std::allocator<decaf::lang::Pointer<activemq::commands::BrokerError::StackTraceElement,
decaf::util::concurrent::atomic::AtomicRefCounter> > >> = {
>       _M_impl = {<std::allocator<decaf::lang::Pointer<activemq::commands::BrokerError::StackTraceElement,
decaf::util::concurrent::atomic::AtomicRefCounter> >> = {<__gnu_cxx::new_allocator<decaf::lang::Pointer<activemq::commands::BrokerError::StackTraceElement,
decaf::util::concurrent::atomic::AtomicRefCounter> >> = {<No data fields>},
<No data fields>}, _M_start = 0x15b33dc0, _M_finish = 0x15b34120, _M_end_of_storage
= 0x15b34120}}, <No data fields>},
>   cause = {<decaf::util::concurrent::atomic::AtomicRefCounter> = {_vptr.AtomicRefCounter
= 0x2aebc6c88490, counter = 0x15b33cd0}, value = 0x0,
>     onDelete = 0x2aebc6307434 <decaf::lang::Pointer<activemq::commands::BrokerError,
decaf::util::concurrent::atomic::AtomicRefCounter>::onDeleteFunc(activemq::commands::BrokerError*)>},
>   exCause = {<decaf::util::concurrent::atomic::AtomicRefCounter> = {_vptr.AtomicRefCounter
= 0x2aebc6c884d0, counter = 0x15a9ec70}, value = 0x0,
>     onDelete = 0x2aebc6307348 <decaf::lang::Pointer<decaf::lang::Exception, decaf::util::concurrent::atomic::AtomicRefCounter>::onDeleteFunc(decaf::lang::Exception*)>}}
> (gdb) l
> 123             cause = new cms::UnsupportedOperationException(this->message);
> 124         } else {
> 125             if (exCause != NULL) {
> 126                 cause = new cms::CMSException(this->message);
> 127             } else {
> 128                 cause = new cms::CMSException(this->exCause->getMessage());
> 129             }
> 130         }
> 131
> 132         // Wrap in a Decaf exception to carry the pointer until it can be
> The check on line 125 seems wrong. It should be ==, not?

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