Segmentation violation ROOT6 on Mac

ROOT
1

Hello,

I’m using ROOT6 on Mac. There is some problem when I using the following code.

//*********************************************************
void test(){

   TCanvas* c1 = new TCanvas("c1","c1 test", 900, 300);
   c1->Divide(3,1);

   TFile* ofile = new TFile("test.root","RECREATE");
   TH1F* hpx = new TH1F("hpx", "hpx" , 400, -20, 20);
   TH1F* hpy = new TH1F("hpy", "hpy" , 400, -20, 20);
   TH1F* hpz = new TH1F("hpz", "hpz" , 400, -20, 20);

   for(int i=0; i<10000; i++)
   {   
      hpx->Fill(gRandom->Gaus(0,1)); hpy->Fill(gRandom->Gaus(0,2)); hpz->Fill(gRandom->Gaus(0,3));
   }   

   c1->cd(1); hpx->Draw(); hpx->Fit("gaus");
   c1->cd(2); hpy->Draw(); hpy->Fit("gaus");
   c1->cd(3); hpz->Draw(); hpz->Fit("gaus");
   c1->cd();

   ofile->cd();
   hpx->Write();hpy->Write();hpz->Write();
   c1->Write();
   ofile->Close();
}

//*********************************************************

root -l test.root
root [0] 
Attaching file test.root as _file0...
(TFile *) 0x7ffdfc289e30
root [1] .ls
TFile**		test.root	
 TFile*		test.root	
  KEY: TH1F	hpx;1	hpx
  KEY: TH1F	hpy;1	hpy
  KEY: TH1F	hpz;1	hpz
  KEY: TCanvas	c1;1	c1 test
root [2] c1->Draw()
Error in <TClingCallFunc::make_wrapper>: Failed to compile
  ==== SOURCE BEGIN ====
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wformat-security"
__attribute__((used)) extern "C" void __cf_0(void* obj, int nargs, void** args, void* ret)
{
   if (ret) {
      new (ret) (double) (TFormula____id18130473110346259110(*(double**)args[0], *(double**)args[1]));
      return;
   }
   else {
      TFormula____id18130473110346259110(*(double**)args[0], *(double**)args[1]);
      return;
   }
}
#pragma clang diagnostic pop
  ==== SOURCE END ====

 *** Break *** segmentation violation
 Generating stack trace...

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2

This works for me:

void test() {

  TCanvas* c1 = new TCanvas("c1","c1 test", 900, 300);
  c1->Divide(3,1);

  TFile* ofile = new TFile("test.root","RECREATE");
  TH1F* hpx = new TH1F("hpx", "hpx" , 400, -20, 20);
  TH1F* hpy = new TH1F("hpy", "hpy" , 400, -20, 20);
  TH1F* hpz = new TH1F("hpz", "hpz" , 400, -20, 20);

  for(int i=0; i<10000; i++) {
    hpx->Fill(gRandom->Gaus(0,1)); hpy->Fill(gRandom->Gaus(0,2)); hpz->Fill(gRandom->Gaus(0,3));
  }
  hpx->SetDirectory(0);
  hpy->SetDirectory(0);
  hpz->SetDirectory(0);

  c1->cd(1); hpx->Draw(); hpx->Fit("gaus");
  c1->cd(2); hpy->Draw(); hpy->Fit("gaus");
  c1->cd(3); hpz->Draw(); hpz->Fit("gaus");

  c1->Update();
  c1->Modified();

  ofile->cd();
  c1->Write();
  hpx->Write(); hpy->Write(); hpz->Write();
  ofile->Close();
}

The main changes are the SetDirectory(0) for the histos, and updating the canvas; without these, things are not correctly written to the output file.
-Daniel

3

Thank you Daniel.

I use your code. However, the problem is still there:

root [0] 
Attaching file test.root as _file0...
(TFile *) 0x7fc27d9a10d0
root [1] .ls
TFile**		test.root	
 TFile*		test.root	
  KEY: TCanvas	c1;1	c1 test
  KEY: TH1F	hpx;1	hpx
  KEY: TH1F	hpy;1	hpy
  KEY: TH1F	hpz;1	hpz
root [2] c1->Draw()
Error in <TClingCallFunc::make_wrapper>: Failed to compile
  ==== SOURCE BEGIN ====
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wformat-security"
__attribute__((used)) extern "C" void __cf_0(void* obj, int nargs, void** args, void* ret)
{
   if (ret) {
      new (ret) (double) (TFormula____id18130473110346259110(*(double**)args[0], *(double**)args[1]));
      return;
   }
   else {
      TFormula____id18130473110346259110(*(double**)args[0], *(double**)args[1]);
      return;
   }
}
#pragma clang diagnostic pop
  ==== SOURCE END ====

 *** Break *** segmentation violation
 Generating stack trace...
An admin user name and password is required to enter Developer Mode.