11 lines · c
1// RUN: %clang_cc1 %s -fsyntax-only -verify -pedantic2 3typedef const char rchar;4int a(char* a, rchar* b) {5 return a-b;6}7 8void f0(void (*fp)(void)) {9 int x = fp - fp; // expected-warning{{arithmetic on pointers to the function type 'void (void)' is a GNU extension}}10}11