[all-commits] [llvm/llvm-project] 0e68b4: [libc++] Implements filebuf unbuffered.

[Mark de Wever via All-commits]

  Branch: refs/heads/users/mordante/implements_filebuf_unbuffered
  Home:   https://github.com/llvm/llvm-project
  Commit: 0e68b4202a2e4395ceca39e1f861ddc4ca4f9ce4
      https://github.com/llvm/llvm-project/commit/0e68b4202a2e4395ceca39e1f861ddc4ca4f9ce4
  Author: Mark de Wever <koraq at xs4all.nl>
  Date:   2024-03-03 (Sun, 03 Mar 2024)

  Changed paths:
    M libcxx/include/fstream
    A libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/setbuf.pass.cpp

  Log Message:
  -----------
  [libc++] Implements filebuf unbuffered.

When calling setbuf(nullptr, 0) before performing file operations it
should set the file to unbuffered mode. Currently the code avoids
buffering internally, but the underlying stream still can buffer.

This is addressed by disabling the buffering of the underlying stream.

Fixes: https://github.com/llvm/llvm-project/issues/60509



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