*** Break *** segmentation violation =========================================================== There was a crash. This is the entire stack trace of all threads: =========================================================== #0 0x00000035314ac89e in waitpid () from /lib64/libc.so.6 #1 0x000000353143e4e9 in do_system () from /lib64/libc.so.6 #2 0x0000003534468c88 in TUnixSystem::StackTrace() () from /usr/lib64/root/libCore.so.5.34 #3 0x0000003534468113 in TUnixSystem::DispatchSignals(ESignals) () from /usr/lib64/root/libCore.so.5.34 #4 #5 0x0000003534cafc97 in TBufferFile::MapObject(TObject const*, unsigned int) () from /usr/lib64/root/libRIO.so.5.34 #6 0x0000003535e9df49 in TBranchElement::ReadLeavesMember(TBuffer&) () from /usr/lib64/root/libTree.so.5.34 #7 0x0000003535e909a1 in TBranch::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.5.34 #8 0x0000003535e9fef6 in TBranchElement::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.5.34 #9 0x0000003535ee4308 in TTree::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.5.34 #10 0x0000000000401d0a in main () =========================================================== The lines below might hint at the cause of the crash. If they do not help you then please submit a bug report at http://root.cern.ch/bugs. Please post the ENTIRE stack trace from above as an attachment in addition to anything else that might help us fixing this issue. =========================================================== #5 0x0000003534cafc97 in TBufferFile::MapObject(TObject const*, unsigned int) () from /usr/lib64/root/libRIO.so.5.34 #6 0x0000003535e9df49 in TBranchElement::ReadLeavesMember(TBuffer&) () from /usr/lib64/root/libTree.so.5.34 #7 0x0000003535e909a1 in TBranch::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.5.34 #8 0x0000003535e9fef6 in TBranchElement::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.5.34 #9 0x0000003535ee4308 in TTree::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.5.34 #10 0x0000000000401d0a in main () ===========================================================