1 // RUN: %clang_cc1 -fsyntax-only -std=c++20 -verify %s 2 3 using fp0_t = void (*)(); 4 using fp1_t = int (*)(); 5 6 extern fp0_t a, b; 7 extern fp1_t c; 8 9 bool eq0 = a == b; 10 bool ne0 = a != b; 11 bool lt0 = a < b; // expected-warning {{ordered comparison of function pointers ('fp0_t' (aka 'void (*)()') and 'fp0_t')}} 12 bool le0 = a <= b; // expected-warning {{ordered comparison of function pointers}} 13 bool gt0 = a > b; // expected-warning {{ordered comparison of function pointers}} 14 bool ge0 = a >= b; // expected-warning {{ordered comparison of function pointers}} 15 auto tw0 = a <=> b; // expected-error {{ordered comparison of function pointers}} 16 17 bool eq1 = a == c; // expected-error {{comparison of distinct pointer types}} 18 bool ne1 = a != c; // expected-error {{comparison of distinct pointer types}} 19 bool lt1 = a < c; // expected-warning {{ordered comparison of function pointers ('fp0_t' (aka 'void (*)()') and 'fp1_t' (aka 'int (*)()'))}} 20 // expected-error@-1 {{comparison of distinct pointer types}} 21 bool le1 = a <= c; // expected-warning {{ordered comparison of function pointers}} 22 // expected-error@-1 {{comparison of distinct pointer types}} 23 bool gt1 = a > c; // expected-warning {{ordered comparison of function pointers}} 24 // expected-error@-1 {{comparison of distinct pointer types}} 25 bool ge1 = a >= c; // expected-warning {{ordered comparison of function pointers}} 26 // expected-error@-1 {{comparison of distinct pointer types}} 27 auto tw1 = a <=> c; // expected-error {{ordered comparison of function pointers}} 28