[libcxx-commits] [libcxx] [libc++][sstream] Explicitly delete special member functions (PR #80254)

[Hristo Hristov via libcxx-commits]

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@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_istringstream
+//     : public basic_istream<charT, traits>
+// {
+// public:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+//     typedef Allocator                      allocator_type;
+//
+//     basic_istringstream(const basic_istringstream&) = delete;
+//     basic_istringstream& operator=(const basic_istringstream&) = delete;
+//
+//     basic_istringstream(basic_istringstream&& rhs);
+//     basic_istringstream& operator=(basic_istringstream&& rhs);
+
+#include <sstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+// Types
+
+static_assert((std::is_base_of<std::basic_istream<char>, std::basic_istringstream<char> >::value), "");
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H-G-Hristov wrote:

Should I add tests for `wchar_t` in this PR? And I think we don't need to double parenthesis `()` in `static_assert`.

https://github.com/llvm/llvm-project/pull/80254