[TTree] Wrong data could be silently written if data-member of object has same name as another branch

root -l -q -e '.L repro.cpp++' && g++ -o repro repro.cpp $(root-config --libs --cflags) && ./repro

// repro.cpp

#include <TTree.h>

#include <TFile.h>

#include <TInterpreter.h>

struct Int {

   int x;

};

int main()

{

   gInterpreter->Load("repro_cpp.so");

   TFile f("f.root", "recreate");

   Int i{-1};

   int x = 1;

   TTree t("t", "t");

   t.Branch("i", &i);

   t.Branch("x", &x);

   t.Fill();

   t.Write();

   f.Close();

   TFile("f.root").Get<TTree>("t")->Scan();   return 0;

}

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*    Row   *       i.x *         x *

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*        0 *        -1 *        -1 *

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