[llvm] [clang-tools-extra] [libcxx] [clang] [libc++] P2770R0: "Stashing stashing iterators for proper flattening" (PR #66033)

[Louis Dionne via llvm-commits]

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@@ -1,57 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-// UNSUPPORTED: c++03, c++11, c++14, c++17
-// UNSUPPORTED: !c++experimental
-
-// constexpr iterator(Parent& parent, OuterIter outer);
-
-#include <cassert>
-#include <ranges>
-
-#include "../types.h"
-
-using NonDefaultCtrIter = cpp20_input_iterator<int*>;
-static_assert(!std::default_initializable<NonDefaultCtrIter>);
-
-using NonDefaultCtrIterView = BufferView<NonDefaultCtrIter, sentinel_wrapper<NonDefaultCtrIter>>;
-static_assert(std::ranges::input_range<NonDefaultCtrIterView>);
-
-constexpr bool test() {
-  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
-  {
-    CopyableChild children[4] = {CopyableChild(buffer[0]), CopyableChild(buffer[1]), CopyableChild(buffer[2]),
-                                 CopyableChild(buffer[3])};
-    CopyableParent parent{children};
-    std::ranges::join_view jv(parent);
-    std::ranges::iterator_t<decltype(jv)> iter(jv, std::ranges::begin(parent));
-    assert(*iter == 1);
-  }
-
-  {
-    // LWG3569 Inner iterator not default_initializable
----------------
ldionne wrote:

Not addressed (unless I missed)?

https://github.com/llvm/llvm-project/pull/66033