1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <initializer_list> 11 12 // template<class E> const E* begin(initializer_list<E> il); 13 14 #include <initializer_list> 15 #include <cassert> 16 17 #ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 18 19 struct A 20 { 21 A(std::initializer_list<int> il) 22 { 23 const int* b = begin(il); 24 const int* e = end(il); 25 assert(il.size() == 3); 26 assert(e - b == il.size()); 27 assert(*b++ == 3); 28 assert(*b++ == 2); 29 assert(*b++ == 1); 30 } 31 }; 32 33 #if _LIBCPP_STD_VER > 11 34 struct B 35 { 36 constexpr B(std::initializer_list<int> il) 37 { 38 const int* b = begin(il); 39 const int* e = end(il); 40 assert(il.size() == 3); 41 assert(e - b == il.size()); 42 assert(*b++ == 3); 43 assert(*b++ == 2); 44 assert(*b++ == 1); 45 } 46 }; 47 48 #endif // _LIBCPP_STD_VER > 11 49 #endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 50 51 int main() 52 { 53 #ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 54 A test1 = {3, 2, 1}; 55 #endif 56 #if _LIBCPP_STD_VER > 11 57 constexpr B test2 = {3, 2, 1}; 58 #endif // _LIBCPP_STD_VER > 11 59 } 60