Mike Kordosky <kordosky@mail.hep.utexas.edu> writes:
> Hi,
>
> I am having a problem associated with TTree::Draw that I believe is
> associated with some recent change to root/cint. I have the following
> unnamed macro:
>
> {
>
> TCut pid("nhitstrips/nhitplanes>1.65 && ceradc[2]==0");
> TCut trig("triggerword>300");
>
>
> TFile f("/data/disk5/dsts/angle-1-22-03/UberDST-41008.root");
> TH1F* h1 = new TH1F("h1", "h1", 200, 0, 200);
>
> TCut tof1("toftdc[2]-toftdc[0]>580 && toftdc[2]-toftdc[0]<640");
>
>
> TCanvas* c2 = new TCanvas("c2", "c2", 600, 800);
> c2->Divide(1,2);
> c2->cd(1);
>
> f.cd();
>
> TH2F* hps1 = new TH2F("hps1", "hps1", 60, -0.5, 59.5, 24, -0.5, 23.5);
>
> snarltree->Draw("hitlist[].strip:hitlist[].plane>>hps1",
> "(hitlist[].padc+hitlist[].nadc)>0"&&pid&&trig&&tof1,"colz");
>
> }
>
> Running this macro causes root to dump:
>
> *** Break *** segmentation violation
> Generating stack trace...
> 0x401b01a7 in TUnixSystem::StackTrace() + 0x393 from
> /data/disk4/minoscode/root/lib/libCore.so
> 0x401aeb1b in TUnixSystem::DispatchSignals(ESignals) + 0x85 from
> /data/disk4/minoscode/root/lib/libCore.so
> 0x401adb68 in <unknown> from /data/disk4/minoscode/root/lib/libCore.so
> 0x401b1cae in <unknown> from /data/disk4/minoscode/root/lib/libCore.so
> 0x40dc2f05 in <unknown> from /lib/i686/libpthread.so.0
> 0x42029188 in <unknown> from /data/disk4/minoscode/root/bin/root.exe
> 0x40c78e72 in <unknown> from /data/disk4/minoscode/root/lib/libTree.so
> 0x405dbaff in G__call_cppfunc + 0x2c4 from
> /data/disk4/minoscode/root/lib/libCint.so
> .
> .
Hi Mike,
it resembles a problem I reported some time ago -
http://root.cern.ch/root/roottalk/roottalk02/4702.html
it turned out to be an untimely deletion of the temporary TCut
object. Does it help if you rearrange the cut in the Draw method?
For example c1="(hitlist..." and c1&&pid&&trig&&tof1
cheers
Jiri
This archive was generated by hypermail 2b29 : Thu Jan 01 2004 - 17:50:12 MET