Fix various issues in std::any and the related tests.

* Fix self-swap. Patch from Casey Carter.

* Remove workarounds and tests for types with deleted move constructors. This
  was originally added as part of a LWG proposed resolution that has since
  changed.

* Re-apply most recent PR for LWG 2769.

* Re-apply most recent PR for LWG 2754. Specifically fix the SFINAE checks to
  use the decayed type.

* Fix tests to allow moved-from std::any's to have a non-empty state. This is
  the behavior of MSVC's std::any.

* Various whitespace and test fixes.

llvm-svn: 283606

2 files changed, 2 insertions, 61 deletions

diff --git a/libcxx/test/support/any_helpers.h b/libcxx/test/support/any_helpers.h
index a0ff8dbc1f9..ae332d5e0a5 100644
--- a/libcxx/test/support/any_helpers.h
+++ b/libcxx/test/support/any_helpers.h
@@ -246,67 +246,6 @@ typedef large_type<> large;
 typedef large_type<1> large1;
 typedef large_type<2> large2;
 
-
-struct deleted_move
-{
-    static int count;
-    static int copied;
-    static int moved;
-    static int const_copied;
-    static int non_const_copied;
-
-    static void reset() {
-        deleted_move::copied = 0;
-        deleted_move::moved = 0;
-        deleted_move::const_copied = 0;
-        deleted_move::non_const_copied = 0;
-    }
-
-    int value;
-
-    explicit deleted_move(int val = 0) : value(val) {
-        ++count;
-    }
-    explicit deleted_move(int, int val, int) : value(val) {
-        ++count;
-    }
-    deleted_move(std::initializer_list<int> il) : value(*il.begin()) {
-        ++count;
-    }
-
-    deleted_move(deleted_move const & other) noexcept {
-        value = other.value;
-        ++count;
-        ++copied;
-        ++const_copied;
-    }
-
-    deleted_move(deleted_move& other) noexcept {
-        value = other.value;
-        ++count;
-        ++copied;
-        ++non_const_copied;
-    }
-
-    deleted_move(deleted_move && other) = delete;
-
-    ~deleted_move() {
-        value = -1;
-        --count;
-    }
-
-private:
-    deleted_move& operator=(deleted_move const&) = delete;
-    deleted_move& operator=(deleted_move&&) = delete;
-};
-
-int deleted_move::count = 0;
-int deleted_move::copied = 0;
-int deleted_move::moved = 0;
-int deleted_move::const_copied = 0;
-int deleted_move::non_const_copied = 0;
-
-
 // The exception type thrown by 'small_throws_on_copy', 'large_throws_on_copy'
 // and 'throws_on_move'.
 struct my_any_exception {};
diff --git a/libcxx/test/support/test_macros.h b/libcxx/test/support/test_macros.h
index c751388e5f2..e89127a0ff1 100644
--- a/libcxx/test/support/test_macros.h
+++ b/libcxx/test/support/test_macros.h
@@ -124,9 +124,11 @@
 #if defined(_LIBCPP_VERSION)
 #define LIBCPP_ASSERT(...) assert(__VA_ARGS__)
 #define LIBCPP_STATIC_ASSERT(...) static_assert(__VA_ARGS__)
+#define LIBCPP_ONLY(...) __VA_ARGS__
 #else
 #define LIBCPP_ASSERT(...) ((void)0)
 #define LIBCPP_STATIC_ASSERT(...) ((void)0)
+#define LIBCPP_ONLY(...) ((void)0)
 #endif
 
 #define ASSERT_NOEXCEPT(...) \