Scope in std::map of classes cointaining TH1Fs

ROOT
1

Hello,

I have a code which is almost like this:

class HistoContainer {
  std::vector<TH1F *> mass;

  HistoContainer(TString name = "TMP") {
     for (int i = 0; i < 10; i++)
       mass[i] = new TH1F(TString::Format("%s_mass_%d", name.Data(), i), "", 100, 0, 1);
  }
};

std::map<TString, HistoContainer> map;

map["one"] = HistoContainer("one");
map["another"] = HistoContainer("another");

TH1F *the_fifth_one = map["one"].mass[4];

std::cerr << "test #1: " << the_fifth_one << " = " << map["one"].mass[4] << std::endl;
std::cerr << "test #2: binwidth[raw] = " << " << map["one"].mass[4]->GetBinWidth(3) << std::endl;
std::cerr << "test #3: binwidth[pnt] = " << " << the_fifth_one->GetBinWidth(3) << std::endl;

but crashes when printing test #3.

Do you have any idea why?

2 
mass.push_back( new TH1F(TString::Format("%s_mass_%d", name.Data(), i), "", 100, 0, 1) );[/code]

Cheers,
Philippe.

mass.push_back( new TH1F(TString::Format("%s_mass_%d", name.Data(), i), “”, 100, 0, 1) );[/code]

Cheers,
Philippe.