clang/test/SemaCXX/ptrtomember-overload-resolution.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11
   2 // expected-no-diagnostics
   3
   4 // 13.3.3.2 Ranking implicit conversion sequences
   5 // conversion of A::* to B::* is better than conversion of A::* to C::*,
   6 struct A {
   7 int Ai;
   8 };
   9
  10 struct B : public A {};
  11 struct C : public B {};
  12
  13 const char * f(int C::*){ return ""; }
  14 int f(int B::*) { return 1; }
  15
  16 struct D : public C {};
  17
  18 const char * g(int B::*){ return ""; }
  19 int g(int D::*) { return 1; }
  20
  21 void test()
  22 {
  23   int i = f(&A::Ai);
  24
  25   const char * str = g(&A::Ai);
  26 }
  27
  28 // conversion of B::* to C::* is better than conversion of A::* to C::*
  29 typedef void (A::*pmfa)();
  30 typedef void (B::*pmfb)();
  31 typedef void (C::*pmfc)();
  32
  33 struct X {
  34         operator pmfa();
  35         operator pmfb();
  36 };
  37
  38
  39 void g(pmfc);
  40
  41 void test2(X x)
  42 {
  43     g(x);
  44 }
  45