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Description

As discovered in https://root-forum.cern.ch/t/possible-issue-when-cloning-trees/63873/15, neither TChain::ResetBranchAddresses nor TTree::ResetBranchAddresses seems to reset the address of their current list of clones.

Reproducer

In pseudo code.

auto newtree = chain->CloneTree(0);
chain->SetBranchAddress(branchname, &ptr);
chain->ResetBranchAdress();
assert( chain->GetBranch(branchname)->GetAddress() == newtree->GetBranch(branchname)->GetAddress() );  

The current code will fail the assert and 'worse' we have newtree->GetBranch(branchname)->GetAddress() == &ptr

ROOT version

master, v6.36, v6.32

Installation method

any

Operating system

any

Additional context

No response