Dear Experts:
I just met a “serious” problem using std::vector in TTree;
I am using ROOT 5.26/00c (ROOT 5.26/00c (tags/v5-26-00c@34586)
I am trying to read the content in TTree I created previously
There are branches in type std::vector .
When I use the interactive mode and try to Scan this variable, they all looks good .
When I try to compile my .C and .h,(by modifying the .C file after MakeClass()) without using linkdef.h and rootdict, the compile is fine, and my main.exe runs smoothly, but when I read the value stored in the branch with std::vector, they seems to be “WRONG” except for the first element of the vector.
Then I try writing a linkdef.h:
#pragma link C++ class vector<float> + ;
#pragma link C++ class vector<double> + ;
#pragma link C++ class vector<int> + ;
#pragma link C++ class vector<bool> + ;and using roodict to generate the dictionary.
This time the print out from my main.exe is corrret.
When I do roodict, I have this warning:
Which seems normal, since root should already include these basic vector class.
So for me it seems not the case. It seems that I must generated the dictionary for vector, in spite of the warning message.
And what is serious for me is that if I do not use linkdef, my program still compile normally. If I were not comparing the value in interactive mode with the compiled program, I will never know there are such problem for the TBranches with vector
So Do I do something wrong? or it is really a bug for root, at least this particular version?