libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_rcontainer.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03
  10
  11 // <stack>
  12
  13 // explicit stack(Container&&= Container());  // before C++20
  14 // stack() : stack(Container()) {}            // C++20
  15 // explicit stack(Container&&);               // C++20
  16
  17 #include <stack>
  18 #include <cassert>
  19
  20 #include "test_macros.h"
  21 #include "MoveOnly.h"
  22 #if TEST_STD_VER >= 11
  23 #include "test_convertible.h"
  24 #endif
  25
  26 template <class C>
  27 C
  28 make(int n)
  29 {
  30     C c;
  31     for (int i = 0; i < n; ++i)
  32         c.push_back(MoveOnly(i));
  33     return c;
  34 }
  35
  36 int main(int, char**)
  37 {
  38     typedef std::deque<MoveOnly> Container;
  39     typedef std::stack<MoveOnly> Q;
  40     Q q(make<Container>(5));
  41     assert(q.size() == 5);
  42
  43 #if TEST_STD_VER >= 11
  44     static_assert(!test_convertible<Q, Container&&>(), "");
  45 #endif
  46
  47   return 0;
  48 }