gcc/testsuite/g++.dg/cpp0x/nullptr15.C


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

// { dg-do compile }
// { dg-options "-std=c++0x" }

// Test template deduction

template <typename T, typename U> struct tType_equal;
template <typename T> struct tType_equal<T, T> { typedef void type; };

template <typename T, typename U>
inline typename tType_equal<T, U>::type
type_equal(U) { }

template<typename T> T* g( T* t ); // { dg-message "note" }

void test_g()
{
  // Deduction to nullptr_t, no deduction to pointer type
  //
  g(nullptr);               // { dg-error "no matching function for call to " }
  // { dg-message "candidate" "candidate note" { target *-*-* } 19 }
  type_equal<float*>(g((float*)nullptr));
  decltype(nullptr) mynull = 0;
  g(mynull);                // { dg-error "no matching function for call to " }
  // { dg-message "candidate" "candidate note" { target *-*-* } 23 }
  type_equal<float*>(g((float*)mynull));
}