[libcxx-commits] [libcxx] [libc++] Implement P0843R14: `inplace_vector` (PR #204008)

[Louis Dionne via libcxx-commits]

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@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+
+// <inplace_vector>
+
+// static constexpr size_type capacity() noexcept;
+
+#include <cassert>
+#include <inplace_vector>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  {
+    using C = std::inplace_vector<int, 0>;
+    ASSERT_SAME_TYPE(C::size_type, decltype(C::capacity()));
+    C c;
+    assert(c.capacity() == 0);
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ldionne wrote:

I don't think this check is relevant since this is  a static member function. Applies to other static functions.

As-is, we're basically testing that the compiler supports both `Class::f()` and `obj.f()` for a static member function `f`, which we should assume to work.

https://github.com/llvm/llvm-project/pull/204008