forked from OSchip/llvm-project
159 lines
3.4 KiB
C++
159 lines
3.4 KiB
C++
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
|
|
// XFAIL: *
|
|
|
|
template <typename T, typename U>
|
|
struct same_type { static const bool value = false; };
|
|
template <typename T>
|
|
struct same_type<T, T> { static const bool value = true; };
|
|
|
|
namespace std {
|
|
typedef decltype(sizeof(int)) size_t;
|
|
|
|
// libc++'s implementation
|
|
template <class _E>
|
|
class initializer_list
|
|
{
|
|
const _E* __begin_;
|
|
size_t __size_;
|
|
|
|
initializer_list(const _E* __b, size_t __s)
|
|
: __begin_(__b),
|
|
__size_(__s)
|
|
{}
|
|
|
|
public:
|
|
typedef _E value_type;
|
|
typedef const _E& reference;
|
|
typedef const _E& const_reference;
|
|
typedef size_t size_type;
|
|
|
|
typedef const _E* iterator;
|
|
typedef const _E* const_iterator;
|
|
|
|
initializer_list() : __begin_(nullptr), __size_(0) {}
|
|
|
|
size_t size() const {return __size_;}
|
|
const _E* begin() const {return __begin_;}
|
|
const _E* end() const {return __begin_ + __size_;}
|
|
};
|
|
}
|
|
|
|
namespace objects {
|
|
|
|
struct X1 { X1(int); };
|
|
struct X2 { explicit X2(int); };
|
|
|
|
template <int N>
|
|
struct A {
|
|
A() { static_assert(N == 0, ""); }
|
|
A(int, double) { static_assert(N == 1, ""); }
|
|
A(std::initializer_list<int>) { static_assert(N == 3, ""); }
|
|
};
|
|
|
|
template <int N>
|
|
struct D {
|
|
D(std::initializer_list<int>) { static_assert(N == 0, ""); } // expected-note 1 {{candidate}}
|
|
D(std::initializer_list<double>) { static_assert(N == 1, ""); } // expected-note 1 {{candidate}}
|
|
};
|
|
|
|
template <int N>
|
|
struct E {
|
|
E(int, int) { static_assert(N == 0, ""); }
|
|
E(X1, int) { static_assert(N == 1, ""); }
|
|
};
|
|
|
|
void overload_resolution() {
|
|
{ A<0> a{}; }
|
|
{ A<0> a = {}; }
|
|
// Narrowing conversions don't affect viability. The next two choose
|
|
// the initializer_list constructor.
|
|
{ A<3> a{1, 1.0}; } // expected-error {{narrowing conversion}}
|
|
{ A<3> a = {1, 1.0}; } // expected-error {{narrowing conversion}}
|
|
{ A<3> a{1, 2, 3, 4, 5, 6, 7, 8}; }
|
|
{ A<3> a = {1, 2, 3, 4, 5, 6, 7, 8}; }
|
|
{ A<3> a{1, 2, 3, 4, 5, 6, 7, 8}; }
|
|
{ A<3> a{1, 2}; }
|
|
|
|
{ D<0> d{1, 2, 3}; }
|
|
{ D<1> d{1.0, 2.0, 3.0}; }
|
|
{ D<-1> d{1, 2.0}; } // expected-error {{ambiguous}}
|
|
|
|
{ E<0> e{1, 2}; }
|
|
}
|
|
|
|
void explicit_implicit() {
|
|
{ X1 x{0}; }
|
|
{ X1 x = {0}; }
|
|
{ X2 x{0}; }
|
|
{ X2 x = {0}; } // expected-error {{explicit}}
|
|
}
|
|
|
|
struct C {
|
|
C();
|
|
C(int, double);
|
|
C(int, int);
|
|
C(std::initializer_list<int>);
|
|
|
|
int operator[](C);
|
|
};
|
|
|
|
C function_call() {
|
|
void takes_C(C);
|
|
takes_C({1, 1.0});
|
|
|
|
C c;
|
|
c[{1, 1.0}];
|
|
|
|
return {1, 1.0};
|
|
}
|
|
|
|
void inline_init() {
|
|
(void) A<1>{1, 1.0};
|
|
(void) new A<1>{1, 1.0};
|
|
}
|
|
|
|
struct B {
|
|
B(C, int, C);
|
|
};
|
|
|
|
void nested_init() {
|
|
B b{{1, 1.0}, 2, {3, 4, 5, 6, 7}};
|
|
}
|
|
}
|
|
|
|
namespace litb {
|
|
|
|
// invalid
|
|
struct A { int a[2]; A():a({1, 2}) { } }; // expected-error {{}}
|
|
|
|
// invalid
|
|
int a({0}); // expected-error {{}}
|
|
|
|
// invalid
|
|
int const &b({0}); // expected-error {{}}
|
|
|
|
struct C { explicit C(int, int); C(int, long); };
|
|
|
|
// invalid
|
|
C c({1, 2}); // expected-error {{}}
|
|
|
|
// valid (by copy constructor).
|
|
C d({1, 2L});
|
|
|
|
// valid
|
|
C e{1, 2};
|
|
|
|
struct B {
|
|
template<typename ...T>
|
|
B(std::initializer_list<int>, T ...);
|
|
};
|
|
|
|
// invalid (the first phase only considers init-list ctors)
|
|
// (for the second phase, no constructor is viable)
|
|
B f{1, 2, 3};
|
|
|
|
// valid (T deduced to <>).
|
|
B g({1, 2, 3});
|
|
|
|
}
|