Details
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Bug
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Status: Closed (View Workflow)
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Blocker
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Resolution: Fixed
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6.14/00, 6.14/04
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None
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Arch Linux x86_64
GCC 8.1.1
Description
When reading two TF1s with the same formula, say '[0]*x + [1]' from a ROOT file the following error message is printed:
input_line_68:2:10: error: redefinition of 'TFormula____id76870135910997656'
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Double_t TFormula____id76870135910997656(Double_t *x,Double_t *p){ return p[0]+p[1]*x[0] ; }
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^
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input_line_62:2:10: note: previous definition is here
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Double_t TFormula____id76870135910997656(Double_t *x,Double_t *p){ return p[0]+p[1]*x[0] ; }
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This bug can be reproduced with the two ROOT scripts attached (first run write.C, then read.C).
int write() {
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TF1* f1 = new TF1("f1", "[0] + [1]*x", 0, 1);
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TF1* f2 = new TF1("f2", "[0] + [1]*x", 0, 1);
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TFile* f = TFile::Open("test.root", "RECREATE");
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f1->Write();
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f2->Write();
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f->Close();
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return 0;
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}
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int read() {
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TFile* f = TFile::Open("test.root", "READ");
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TF1* f1 = dynamic_cast<TF1*>(f->Get("f1"));
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TF1* f2 = dynamic_cast<TF1*>(f->Get("f2"));
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new TCanvas;
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f1->Draw();
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new TCanvas;
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f2->Draw();
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return 0;
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}
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