1 // RUN: %clang -fsyntax-only -std=c++17 %s -Xclang -verify 2 3 // The important part is that we do not crash. 4 5 template<typename T> T declval(); 6 7 template <typename T> Call(T x)8auto Call(T x) -> decltype(declval<T>()(0)) {} 9 10 class Status {}; 11 fun()12void fun() { 13 // The Status() (instead of Status) here used to cause a crash. 14 Call([](auto x) -> Status() {}); // expected-error{{function cannot return function type 'Status ()}} 15 } 16