[libcxx-commits] [libcxx] [libc++] Implements filebuf unbuffered. (PR #76629)

[Louis Dionne via libcxx-commits]

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@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// basic_streambuf<charT, traits>* setbuf(char_type* s, streamsize n) override;
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+static std::size_t file_size(const char* filename) {
+  FILE* f = std::fopen(filename, "rb");
+  fseek(f, 0, SEEK_END);
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ldionne wrote:

I would use qualified names here and below.

https://github.com/llvm/llvm-project/pull/76629