llvm-project/clang/test/SemaCXX/ptrtomember.cpp

// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11

struct  S {
	int i;

	int mem(int);
};

int foo(int S::* ps, S *s)
{
    return (s->*ps)(1); // expected-error {{called object type 'int' is not a function or function pointer}}
}

struct S2 {
  int bitfield : 1;
  struct {
    int anon_bitfield : 1;
  };
};

int S2::*pf = &S2::bitfield; // expected-error {{address of bit-field requested}}
int S2::*anon_pf = &S2::anon_bitfield; // expected-error {{address of bit-field requested}}

struct S3 {
  void m();
};

void f3(S3* p, void (S3::*m)()) {
    p->*m; // expected-error {{reference to non-static member function must be called}}
    (void)(p->*m); // expected-error {{reference to non-static member function must be called}}
    (void)(void*)(p->*m); // expected-error {{reference to non-static member function must be called}} expected-error {{cannot cast from type 'void' to pointer type 'void *'}}
    (void)reinterpret_cast<void*>(p->*m); // expected-error {{reference to non-static member function must be called}} expected-error {{reinterpret_cast from 'void' to 'void *' is not allowed}}
    if (p->*m) {} // expected-error {{reference to non-static member function must be called}} expected-error {{value of type 'void' is not contextually convertible to 'bool'}}
    if (!(p->*m)) {} // expected-error {{reference to non-static member function must be called}} expected-error {{invalid argument type 'void' to unary expression}}
    if (p->m) {}; // expected-error {{reference to non-static member function must be called}} expected-error {{value of type 'void' is not contextually convertible to 'bool'}}
    if (!p->m) {}; // expected-error {{reference to non-static member function must be called}} expected-error {{invalid argument type 'void' to unary expression}}
}