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

@@ -276,6 +276,30 @@ private: state_type __st_; state_type __st_last_; ios_base::openmode __om_; + // Used to track the currently used mode and track whether the output should + // be unbuffered. + // [filebuf.virtuals]/12 + // If setbuf(0, 0) is called on a stream

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

@@ -294,7 +318,10 @@ private: return nullptr; __om_ = __mode; + __try_set_unbuffered_mode(); ldionne wrote: Strange indentation. https://github.com/llvm/llvm-project/pull/76629 ___

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

@@ -276,6 +276,30 @@ private: state_type __st_; state_type __st_last_; ios_base::openmode __om_; + // Used to track the currently used mode and track whether the output should mordante wrote: Review note: It might be possible to use other fields to

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

llvmbot wrote: @llvm/pr-subscribers-libcxx Author: Mark de Wever (mordante) Changes 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.

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

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