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 // UNSUPPORTED: c++98, c++03, c++11, c++14 11 12 // <memory> 13 14 // template <class ForwardIt> 15 // void destroy(ForwardIt, ForwardIt); 16 17 #include <memory> 18 #include <cstdlib> 19 #include <cassert> 20 21 #include "test_macros.h" 22 #include "test_iterators.h" 23 24 struct Counted { 25 static int count; resetCounted26 static void reset() { count = 0; } CountedCounted27 Counted() { ++count; } CountedCounted28 Counted(Counted const&) { ++count; } ~CountedCounted29 ~Counted() { --count; } 30 friend void operator&(Counted) = delete; 31 }; 32 int Counted::count = 0; 33 main()34int main() 35 { 36 using It = forward_iterator<Counted*>; 37 const int N = 5; 38 alignas(Counted) char pool[sizeof(Counted)*N] = {}; 39 Counted* p = (Counted*)pool; 40 std::uninitialized_fill(p, p+N, Counted()); 41 assert(Counted::count == 5); 42 std::destroy(p, p+1); 43 p += 1; 44 assert(Counted::count == 4); 45 std::destroy(It(p), It(p + 4)); 46 assert(Counted::count == 0); 47 } 48