13 lines · cpp
1//RUN: %clang_cc1 -std=c++20 -fsyntax-only -verify %s2 3// Force a fatal error4#include <unknownheader> // expected-error {{file not found}}5 6namespace N {}7 8enum class E {};9using enum N::E::V;10 11using T = int;12using enum N::T::v;13