------- Comment #6 from olaf dot dietsche at gfa-net dot de 2006-03-05 14:21 ------- Sorry, if my example wasn't clear enough :-(. I'll try to clarify.
M::value_type is std::map<int, double>::value_type, which is std::map<int, double>::pair<int, double> in my first example. g++ doesn't recognize the user defined operator <<(std::ostream &f, const M::value_type &), which is operator<<(ostream &, const pair<int, double> &) If I change double to struct A, g++ _does_ recognize the user defined operator <<(std::ostream &f, const M::value_type &), which is - in my second example - operator<<(ostream, const pair<int, struct A> &) And this is my problem: the difference in ignoring the user defined operator<<() in the first case and recognizing the user defined operator<<() in the second case. I hope, this makes my problem a bit more understandable. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26512
