[Bug c++/67605] Compilation errors creating std::pair using templated arguments

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67605

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Spelling it "typename List<K>::template Node<K>*" helps. Note that clang
rejects the code as well.