Differential D91292 Diff 308912 libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/default.pass.cpp

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libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/default.pass.cpp

//===----------------------------------------------------------------------===//		//===----------------------------------------------------------------------===//
//		//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.		// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.		// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception		// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//		//
//===----------------------------------------------------------------------===//		//===----------------------------------------------------------------------===//

// <sstream>		// <sstream>

// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >		// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
// class basic_stringbuf		// class basic_stringbuf

// explicit basic_stringbuf(ios_base::openmode which = ios_base::in \| ios_base::out);		// explicit basic_stringbuf(ios_base::openmode which = ios_base::in \| ios_base::out); // before C++20
		// basic_stringbuf() : basic_stringbuf(ios_base::in \| ios_base::out) {} // C++20
		// explicit basic_stringbuf(ios_base::openmode which); // C++20

#include <sstream>		#include <sstream>
#include <cassert>		#include <cassert>

#include "test_macros.h"		#include "test_macros.h"
		#if TEST_STD_VER >= 11
		#include "test_convertible.h"
		#endif

template<typename CharT>		template<typename CharT>
struct testbuf		struct testbuf
: std::basic_stringbuf<CharT>		: std::basic_stringbuf<CharT>
{		{
void check()		void check()
{		{
assert(this->eback() == NULL);		assert(this->eback() == NULL);
Show All 19 Lines	int main(int, char**)
testbuf<char> buf;		testbuf<char> buf;
buf.check();		buf.check();
}		}
{		{
testbuf<wchar_t> buf;		testbuf<wchar_t> buf;
buf.check();		buf.check();
}		}

		#if TEST_STD_VER >= 11
		{
		typedef std::stringbuf B;
		#if TEST_STD_VER > 17
		static_assert(test_convertible<B>(), "");
		#else
		static_assert(!test_convertible<B>(), "");
		#endif
		static_assert(!test_convertible<B, std::ios_base::openmode>(), "");
		}
		#endif

return 0;		return 0;
}		}