rust/library/std
Alex Crichton b85b2a783b std: Update documentation of seek_write on Windows
Currently the documentation of `FileExt::seek_write` on Windows
indicates that writes beyond the end of the file leave intermediate
bytes uninitialized. This commentary dates back to the original
inclusion of these functions in #35704 (wow blast from the past!). At
the time the functionality here was implemented using `WriteFile`, but
nowadays the `NtWriteFile` method is used instead. The documentation for
`NtWriteFile` explicitly states:

> If Length and ByteOffset specify a write operation past the current
> end-of-file mark, NtWriteFile automatically extends the file and updates
> the end-of-file mark; any bytes that are not explicitly written between
> such old and new end-of-file marks are defined to be zero.

This commentary has had a downstream impact in the `system-interface`
crate where it tries to handle this by explicitly writing zeros, but I
don't believe that's necessary any more. I'm sending a PR upstream here
to avoid future confusion and codify that zeros are written in the
intermediate bytes matching what Windows currently provides.
2024-01-28 11:24:27 -08:00
..
benches mv std libs to library/ 2020-07-27 19:51:13 -05:00
src std: Update documentation of seek_write on Windows 2024-01-28 11:24:27 -08:00
tests Move RandomState and DefaultHasher into std::hash, but don't export for now 2023-11-02 20:35:20 -04:00
build.rs Remove asmjs from library 2023-10-28 23:10:45 -07:00
Cargo.toml libc: bump dependency to 0.2.150 2023-11-05 18:32:10 +01:00