[libcxx-commits] [libcxx] [llvm] [libc++] Implement P1885R12: `<text_encoding>` (PR #141312)

[A. Jiang via libcxx-commits]

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@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: std-at-least-c++26
+
+// <text_encoding>
+
+// text_encoding text_encoding::literal() noexcept;
+
+#include <cassert>
+#include <text_encoding>
+
+constexpr bool test() {
+  std::text_encoding te = std::text_encoding::literal();
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frederick-vs-ja wrote:

The `std::same_as<...> decltype(auto)` technique would be meaningful here.

https://github.com/llvm/llvm-project/pull/141312