[bdbxml] DbXml::QueryPlanFunction::getUriArg unexpected throw.

Ok, first let me preface this email: this report is slightly bogus from 
the 'unlikely to happen in the real world' category of bugs.  However, 
in our unit tests, which continue to grow for nxqd we have experienced 
the following 'strange behavior'.

Here's the synopsis in pseudo code:

createContainer( 'db#824948458663#641948458648' );
query ( 'collection("db#824948458663#641948458648")//Node3' );

This core dumps.  However, if the # signs are removed from the container 
name, all is well.

Here is a back trace from gdb at the server side:

#0  0xb7ff8402 in __kernel_vsyscall ()
#1  0x00a607d5 in raise () from /lib/tls/libc.so.6
#2  0x00a62149 in abort () from /lib/tls/libc.so.6
#3  0x009861db in __gnu_cxx::__verbose_terminate_handler () from 
/usr/lib/libstdc++.so.6
#4  0x00983ef1 in __cxa_call_unexpected () from /usr/lib/libstdc++.so.6
#5  0x00983f26 in std::terminate () from /usr/lib/libstdc++.so.6
#6  0x0098406f in __cxa_throw () from /usr/lib/libstdc++.so.6
#7  0xb790fac7 in DbXml::QueryPlanFunction::getUriArg (this=0x0, 
context=0x8a0c608) at XStr.hpp:24
#8  0xb7911bbb in DbXml::QueryPlanFunction::generateQueryPlan 
(this=0x8a1cb08, mgr=@0x8a0ca94, txn=0x0, qp=0x8a1cbb4,
    context=0x8a0c608) at QueryPlanFunction.cpp:143
#9  0xb7916a92 in DbXml::QueryPlanGenerator::generateRawQueryPlans 
(this=0x8a1bd80) at stl_iterator.h:614
#10 0xb791d106 in DbXml::QueryPlanGenerator::optimize (this=0x8a1bd80, 
query=0x8a1c390) at QueryPlanGenerator.cpp:200
#11 0xb7914605 in DbXml::Optimizer::startOptimize (this=0x8a1bd80, 
query=0x8a1c390) at Optimizer.cpp:45
#12 0xb786cb2b in DbXml::QueryExpression::init (this=0x8a0c9e0, txn=0x0) 
at scoped_ptr.hpp:64
#13 0xb786d6ae in DatabaseQueryExpression (this=0x8a0c9e0, 
query=@0x89e2370, context=@0xb753d2c0, txn=0x0)
    at QueryExpression.cpp:132
#14 0xb78b20f0 in DbXml::XmlManager::prepare (this=0x89d8338, 
xquery=@0x89e2370, context=@0xb753d2c0) at XmlManager.cpp:414
#15 0xb78b21d7 in DbXml::XmlManager::query (this=0x89d8338, 
xquery=@0x89e2370, context=@0xb753d2c0, flags=3075723776)
    at XmlManager.cpp:429
#16 0x08050c5b in org::nxqd::server::query (this=0xbfff54f0, 
query=0x89e2370, namespacePrefix=0x0, namespaceURI=0x0,
    result=@0xb753d350) at server.hpp:275
#17 0x08050f28 in nxqd__query (soap=0x0, query=0x89e2370, 
namespacePrefix=0x0, namespaceURI=0x0, result=@0xb753d350)
    at server.cpp:333
#18 0x080658e1 in soap_serve_nxqd__query (soap=0x89e2390) at 
soapServer.cpp:113
#19 0x08067111 in soap_serve_request (soap=0x89e2390) at soapServer.cpp:74
#20 0x08067371 in soap_serve (soap=0x89e2390) at soapServer.cpp:49
#21 0x0804e385 in org::nxqd::server::process_queue (this=0xbfff54f0, 
soap=0x89e2390) at server.cpp:555
#22 0x0804e3e9 in org::nxqd::server::process_queue (soap=0x89e2390) at 
server.cpp:529
#23 0x00c80341 in start_thread () from /lib/tls/libpthread.so.0
#24 0x00afffee in clone () from /lib/tls/libc.so.6

Never mind that i haven't registered to catch unexpected throws for a 
clean shutdown - that's being added now :)

thanks for a great product...hopefully we will be able to offer 
something to aid in a broader DB XML adoption!

-tom mccubbin



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