hello,

in todays tct i see:

0x7260c1db muon::dcmathsegmentmaker::associatemdtstosegment(hepgeom::vector3d&lt;double&gt; const&amp;, trkdriftcirclemath::segment&amp;, std::vector&lt;muon::mdtdriftcircleontrack const*, std::allocator&lt;muon::mdtdriftcircleontrack const*&gt; &gt; const&amp;) const + 0x4cb [/afs/cern.ch/atlas/software/builds/nightlies/dev/atlasreconstruction/rel_2/installarea/i686-slc5-gcc43-opt/lib/libdcmathsegmentmaker.so]
 0x7261233b muon::dcmathsegmentmaker::find(hepgeom::point3d&lt;double&gt; const&amp;, hepgeom::vector3d&lt;double&gt; const&amp;, std::vector&lt;muon::mdtdriftcircleontrack const*, std::allocator&lt;muon::mdtdriftcircleontrack const*&gt; &gt; const&amp;, std::vector&lt;muon::muonclusterontrack const*, std::allocator&lt;muon::muonclusterontrack const*&gt; &gt; const&amp;, bool, double) + 0x1a0b [/afs/cern.ch/atlas/software/builds/nightlies/dev/atlasreconstruction/rel_2/installarea/i686-slc5-gcc43-opt/lib/libdcmathsegmentmaker.so]
 0x725f121d muon::dcmathsegmentmaker::find(trk::trackroad const&amp;, std::vector&lt;std::vector&lt;muon::mdtdriftcircleontrack const*, std::allocator&lt;muon::mdtdriftcircleontrack const*&gt; &gt;, std::allocator&lt;std::vector&lt;muon::mdtdriftcircleontrack const*, std::allocator&lt;muon::mdtdriftcircleontrack const*&gt; &gt; &gt; &gt; const&amp;, std::vector&lt;std::vector&lt;muon::muonclusterontrack const*, std::allocator&lt;muon::muonclusterontrack const*&gt; &gt;, std::allocator&lt;std::vector&lt;muon::muonclusterontrack const*, std::allocator&lt;muon::muonclusterontrack const*&gt; &gt; &gt; &gt; const&amp;, bool, double) + 0x19d [/afs/cern.ch/atlas/software/builds/nightlies/dev/atlasreconstruction/rel_2/installarea/i686-slc5-gcc43-opt/lib/libdcmathsegmentmaker.so]
 0x743d93af mugirlns::mdt::buildsegments(mugirlns::candidate*, std::vector&lt;mugirlns::chamber*, std::allocator&lt;mugirlns::chamber*&gt; &gt;&amp;, double) + 0xe5f [/afs/cern.ch/atlas/software/builds/nightlies/dev/atlasreconstruction/rel_2/installarea/i686-slc5-gcc43-opt/lib/libmugirlcandidate.so]
 0x743a2302 mugirlns::candidate::buildsegments(mugirlns::technologytype, mugirlns::distancetype, mugirlns::regiontype, mugirlns::technologytype) + 0x422 [/afs/cern.ch/atlas/software/builds/nightlies/dev/atlasreconstruction/rel_2/installarea/i686-slc5-gcc43-opt/lib/libmugirlcandidate.so]
 0x743b35bf mugirlns::candidatetool::fill(int, rec::trackparticle const*, bool) + 0xa6f [/afs/cern.ch/atlas/software/builds/nightlies/dev/atlasreconstruction/rel_2/installarea/i686-slc5-gcc43-opt/lib/libmugirlcandidate.so]
 0x6838da4a mugirl::execute() + 0x15aa [/afs/cern.ch/atlas/software/builds/nightlies/dev/atlasreconstruction/rel_2/installarea/i686-slc5-gcc43-opt/lib/libmugirl.so]

https://atlasrtt.cern.ch/tct/rel_2/dev/build/i686-slc5-gcc43-opt/offline/tier0chaintests/run00167607_express6_collisions/run00167607_express6_collisions_log

command to reproduce:

command=/afs/cern.ch/atlas/software/builds/nightlies/dev/atlasreconstruction/rel_2/installarea/share/bin/reco_trf.py outputdesd_sglmufile=sglmu_express_6.pool.root outputdraw_zmumufile=zmumu_express_6.data outputdesd_sglelfile=sglel_express_6.pool.root ami=q200 hist=mymergedmonitoring_express_6.root outputmuoncalibntup=muoncalib_express_6.root outputdraw_zeefile=zee_express_6.data outputpixelcalibntup=trackval_express_6.root maxevents=500 outputesdfile=myesd_express_6.pool.root outputaodfile=myaod_express_6.aod.pool.root outputdesd_mbiasfile=mbias_express_6.pool.root outputdesd_metfile=met_express_6.pool.root outputdesdm_muonfile=muon_express_6.pool.root inputbsfile=0.data,1.data,2.data outputdesdm_egammafile=egamma_express_6.pool.root outputntup_trig=trig_express_6.root outputdesd_phojetfile=phojet_express_6.pool.root outputdesdm_trackfile=track_express_6.pool.root outputdesdm_caljetfile=caljet_express_6.pool.root outputtagfile_e2a=mytag_express_6.root
exitcode=6

general bug hunting hints can be found at:

https://twiki.cern.ch/twiki/bin/viewauth/atlas/recbuginvestigation

cheers,

mark

