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// PR c++/49181
// { dg-do compile { target c++11 } }
namespace std
{
typedef __SIZE_TYPE__ size_t;
template<typename _Tp, _Tp>
struct integral_constant;
template<typename _Tp, _Tp __v>
struct integral_constant
{
static constexpr _Tp value = __v;
typedef _Tp value_type;
typedef integral_constant<_Tp, __v> type;
constexpr operator value_type() { return value; }
};
typedef integral_constant<bool, true> true_type;
typedef integral_constant<bool, false> false_type;
template<typename _Tp, _Tp __v>
constexpr _Tp integral_constant<_Tp, __v>::value;
template<bool, typename _Tp = void>
struct enable_if
{ };
template<typename _Tp>
struct enable_if<true, _Tp>
{ typedef _Tp type; };
template<typename _Tp>
inline _Tp
declval();
struct bad_alloc { };
}
void* operator new(std::size_t)
#if __cplusplus <= 201402L
throw (std::bad_alloc) // { dg-warning "deprecated" "" { target { ! c++17 } } }
#endif
;
namespace std
{
template<typename _Tp>
class allocator
{
public:
typedef _Tp* pointer;
typedef _Tp value_type;
pointer
allocate(size_t, const void* = 0);
};
template<typename _Alloc>
struct allocator_traits
{
typedef typename _Alloc::value_type value_type;
template<typename _Tp> static typename _Tp::pointer
_S_pointer_helper(_Tp*);
static value_type* _S_pointer_helper(...);
typedef decltype(_S_pointer_helper((_Alloc*)0)) __pointer;
typedef __pointer pointer;
typedef const void* const_void_pointer;
private:
template<typename _Alloc2>
struct __allocate_helper
{
template<typename _Alloc3,
typename = decltype(std::declval<_Alloc3*>()->allocate(
std::declval<size_t>(),
std::declval<const_void_pointer>()))>
static true_type __test(int);
template<typename>
static false_type __test(...);
typedef decltype(__test<_Alloc>(0)) type;
static const bool value = type::value;
};
template<typename _Alloc2>
static typename
enable_if<__allocate_helper<_Alloc2>::value, pointer>::type
_S_allocate(_Alloc2& __a, size_t __n, const_void_pointer __hint)
{ return __a.allocate(__n, __hint); }
public:
static pointer
allocate(_Alloc& __a, size_t __n, const_void_pointer __hint)
{ return _S_allocate(__a, __n, __hint); }
};
}
namespace std
{
typedef short test_type;
template struct allocator_traits<allocator<test_type>>;
}
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