libcxx/test/std/utilities/utility/forward/move.verify.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 // This test should pass in C++03 with Clang extensions because Clang does
  10 // not implicitly delete the copy constructor when move constructors are
  11 // defaulted using extensions.
  12
  13 // XFAIL: c++03
  14
  15 // test move
  16
  17 #include <utility>
  18 #include <cassert>
  19
  20 struct move_only {
  21     move_only() {}
  22     move_only(move_only&&) = default;
  23     move_only& operator=(move_only&&) = default;
  24 };
  25
  26 move_only source() {return move_only();}
  27 const move_only csource() {return move_only();}
  28
  29 void test(move_only) {}
  30
  31 int main(int, char**)
  32 {
  33   const move_only ca = move_only();
  34   // expected-error@+1 {{call to implicitly-deleted copy constructor of 'move_only'}}
  35   test(std::move(ca));
  36
  37   return 0;
  38 }