| 1 | // RUN: %clang_cc1 -verify %s |
| 2 | // expected-no-diagnostics |
| 3 | |
| 4 | typedef char one_byte; |
| 5 | struct two_bytes { char data[2]; }; |
| 6 | |
| 7 | template<typename T> one_byte __is_class_check(int T::*); |
| 8 | template<typename T> two_bytes __is_class_check(...); |
| 9 | |
| 10 | template<typename T> struct is_class { |
| 11 | static const bool value = sizeof(__is_class_check<T>(0)) == 1; |
| 12 | }; |
| 13 | |
| 14 | struct X { }; |
| 15 | |
| 16 | int array0[is_class<X>::value? 1 : -1]; |
| 17 | int array1[is_class<int>::value? -1 : 1]; |
| 18 | int array2[is_class<char[3]>::value? -1 : 1]; |
| 19 | |
| 20 | namespace instantiation_order1 { |
| 21 | template<typename T> |
| 22 | struct it_is_a_trap { |
| 23 | typedef typename T::trap type; |
| 24 | }; |
| 25 | |
| 26 | template<bool, typename T = void> |
| 27 | struct enable_if { |
| 28 | typedef T type; |
| 29 | }; |
| 30 | |
| 31 | template<typename T> |
| 32 | struct enable_if<false, T> { }; |
| 33 | |
| 34 | template<typename T> |
| 35 | typename enable_if<sizeof(T) == 17>::type |
| 36 | f(const T&, typename it_is_a_trap<T>::type* = 0); |
| 37 | |
| 38 | void f(...); |
| 39 | |
| 40 | void test_f() { |
| 41 | f('a'); |
| 42 | } |
| 43 | } |
| 44 | |