Sourced from tempfile's changelog.

3.4.0

SECURITY: Prior tempfile releases depended on remove_dir_all version 0.5.0 which was vulnerabiel to a TOCTOU race. This same race is present in rust versions prior to 1.58.1.

Features:

• Generalized temporary files: NamedTempFile can now abstract over different kinds of files (e.g., unix domain sockets, pipes, etc.):
  • Add Builder::make and Builder::make_in for generalized temp file creation.
  • Add NamedTempFile::from_parts to complement NamedTempFile::into_parts.
  • Add generic parameter to NamedTempFile to support wrapping non-File types.

Bug Fixes/Improvements:

• Don't try to create a temporary file multiple times if the file path has been fully specified by the user (no random characters).
• NamedTempFile::persist_noclobber is now always atomic on linux when renameat_with is supported. Previously, it would first link the new path, then unlink the previous path.
• Fix compiler warnings on windows.

Trivia:

• Switch from libc to rustix on wasi/unix. This now makes direct syscalls instead of calling through libc.
• Remove remove_dir_all dependency. The rust standard library has optimized their internal version significantly.
• Switch to official windows-sys windows bindings.

Breaking:

• The minimum rust version is now 1.48.0.
• Mark most functions as must_use.
• Uses direct syscalls on linux by default, instead of libc.
• The new type parameter in NamedTempFile may lead to type inference issues in some cases.

• See full diff in compare view

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