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 // <memory> 11 12 // template <class InputIterator, class Size, class ForwardIterator> 13 // ForwardIterator 14 // uninitialized_copy_n(InputIterator first, Size n, 15 // ForwardIterator result); 16 17 #include <memory> 18 #include <cassert> 19 20 struct B 21 { 22 static int count_; 23 int data_; 24 explicit B() : data_(1) {} 25 B(const B& b) {if (++count_ == 3) throw 1; data_ = b.data_;} 26 ~B() {data_ = 0;} 27 }; 28 29 int B::count_ = 0; 30 31 int main() 32 { 33 const int N = 5; 34 char pool[sizeof(B)*N] = {0}; 35 B* bp = (B*)pool; 36 B b[N]; 37 try 38 { 39 std::uninitialized_copy_n(b, 5, bp); 40 assert(false); 41 } 42 catch (...) 43 { 44 for (int i = 0; i < N; ++i) 45 assert(bp[i].data_ == 0); 46 } 47 B::count_ = 0; 48 std::uninitialized_copy_n(b, 2, bp); 49 for (int i = 0; i < 2; ++i) 50 assert(bp[i].data_ == 1); 51 } 52
