sfinae-1.cpp
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// RUN: %clang_cc1 -verify %s
// expected-no-diagnostics
typedef char one_byte;
struct two_bytes { char data[2]; };
template<typename T> one_byte __is_class_check(int T::*);
template<typename T> two_bytes __is_class_check(...);
template<typename T> struct is_class {
static const bool value = sizeof(__is_class_check<T>(0)) == 1;
};
struct X { };
int array0[is_class<X>::value? 1 : -1];
int array1[is_class<int>::value? -1 : 1];
int array2[is_class<char[3]>::value? -1 : 1];
namespace instantiation_order1 {
template<typename T>
struct it_is_a_trap {
typedef typename T::trap type;
};
template<bool, typename T = void>
struct enable_if {
typedef T type;
};
template<typename T>
struct enable_if<false, T> { };
template<typename T>
typename enable_if<sizeof(T) == 17>::type
f(const T&, typename it_is_a_trap<T>::type* = 0);
void f(...);
void test_f() {
f('a');
}
}