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
.
.
.
and so on.
The odd thing is that it works if I comment out the last command
(TTree::Draw), then run the macro and finally highlight and copy the last
line into the interpreter. I'm pretty sure that this sort of thing did
work in previous versions of root (for example versions from the era
oct02-jan03).
I use:
gcc 3.2.1
linux x86, kernel 2.4.20
root from cvs on may 31.
I can (privately) provide the datafile associated with this problem.
Mike Kordosky
--
Graduate Research Assistant // High Energy Physics Lab
kordosky@hep.utexas.edu // University of Texas at Austin
kordosky@fnal.gov //
ph: (512) 471-8426 (RLM Lab, Office)
(512) 475-8673 (ENS Lab)
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