25 lines · cpp
1// RUN: %clang_cc1 -std=c++2a -verify %s2 3template<int> struct X {};4 5X<1> operator<<(X<0>, X<0>);6X<2> operator<=>(X<0>, X<1>);7X<2> operator<=>(X<1>, X<0>);8X<3> operator<(X<0>, X<2>);9X<3> operator<(X<2>, X<0>);10 11void f(X<0> x0, X<1> x1) {12 X<2> a = x0 <=> x0 << x0;13 X<2> b = x0 << x0 <=> x0; // expected-warning {{overloaded operator << has higher precedence than comparison operator}} expected-note 2{{}}14 X<3> c = x0 < x0 <=> x1;15 X<3> d = x1 <=> x0 < x0;16 X<3> e = x0 < x0 <=> x0 << x0;17 X<3> f = x0 << x0 <=> x0 < x0; // expected-warning {{overloaded operator << has higher precedence than comparison operator}} expected-note 2{{}}18}19 20struct PR41991 {21 [[nodiscard]] friend bool operator==(const PR41991&, const PR41991&) = default;22 [[nodiscard]] friend bool operator!=(const PR41991&, const PR41991&) = delete;23 [[nodiscard]] friend bool operator<(const PR41991&, const PR41991&); // expected-error {{an attribute list cannot appear here}}24};25