tree 5a77e3f37ccd9b120120a0150329a91fd21bd8c9
parent 3d80477aa2df8eac64d964430a86c1d55b6f547f
author Eric Fiselier <eric@efcs.ca> 1561130455 +0000
committer Eric Fiselier <eric@efcs.ca> 1561130455 +0000

Make move and forward work in C++03.

These functions are key to allowing the use of rvalues and variadics
in C++03 mode. Everything works the same as in C++11, except for one
tangentially related case:

struct T {
  T(T &&) = default;
};

In C++11, T has a deleted copy constructor. But in C++03 Clang gives
it both a move and a copy constructor. This seems reasonable enough
given the extensions it's using.

The other changes in this patch were the minimal set required
to keep the tests passing after the move/forward change. Most notably
the removal of the `__rv<unique_ptr>` hack that was present
in an attempt to make unique_ptr move only without language support.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@364063 91177308-0d34-0410-b5e6-96231b3b80d8