| // PR c++/98231 | |
| // { dg-do compile } | |
| template <typename, typename = int> struct basic_ostream {}; | |
| namespace N { | |
| template <typename Char, typename CharTraits, typename T> | |
| void operator<<(basic_ostream<Char, CharTraits>, T); | |
| } | |
| basic_ostream<char> os; | |
| template<typename T> void | |
| foo (T value) | |
| { | |
| using N::operator<<; | |
| os << value; | |
| } | |
| void bar() { foo (1); } |