Problem with istringstream

When I try to run directly a program within the ROOT terminal I got this error message

Error: operator== not defined for basic_istringstream<char,char_traits,allocator >

while if I normally compile it, everything works…
Does anyone have a clue about this?


Could you provide more information about your problem?
What platform are your running on? Which version of ROOT are you trying this with? How was is compiled?
What is the command that lead to the error message? (Aka do you have a way for us to reproduce the problem?)