// RUN: %clang_cc1 -fsyntax-only -std=c++20 %s -verify
struct S {
void f(this auto &a); // expected-error {{explicit object parameters are incompatible with C++ standards before C++2b}}
};
void f() {
(void)[](this auto&a){}; // expected-error {{explicit object parameters are incompatible with C++ standards before C++2b}}
}