1 // RUN: %clang_cc1 -triple x86_64-linux -fsyntax-only -frounding-math -verify %s 2 a()3 template <class b> b::a() {} 4 // expected-warning@-1 {{implicit 'typename' is a C++20 extension}} 5 // expected-error@-2 {{expected unqualified-id}} 6