8b2b84e483
Tree Borrows: Make tree root always be initialized This PR fixes a slight annoyance we discovered while formally proving that certain optimizations are sound with Tree Borrows. In particular... (copied from the commit message): There should never be an `Active` but not initialized node in the borrow tree. If such a node exists, and if it has a protector, then on a foreign read, it could become disabled. This leads to some problems when formally proving that read moving optimizations are sound. The root node is the only node for which this can happen, since all other nodes can only become `Active` when actually used. But special-casing the root node here is annoying to reason about, everything becomes much nicer if we can simply say that *all* `Active` nodes must be initialized. This requires making the root node default-initialized. This is also more intuitive, since the root arguably becomes initialized during the allocation, which can be considered a write. |
||
|---|---|---|
| .github | ||
| .reuse | ||
| compiler | ||
| library | ||
| LICENSES | ||
| src | ||
| tests | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmodules | ||
| .mailmap | ||
| Cargo.lock | ||
| Cargo.toml | ||
| CODE_OF_CONDUCT.md | ||
| config.example.toml | ||
| configure | ||
| CONTRIBUTING.md | ||
| COPYRIGHT | ||
| INSTALL.md | ||
| LICENSE-APACHE | ||
| LICENSE-MIT | ||
| README.md | ||
| RELEASES.md | ||
| rust-bors.toml | ||
| rustfmt.toml | ||
| triagebot.toml | ||
| x | ||
| x.ps1 | ||
| x.py | ||
The Rust Programming Language
This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Note: this README is for users rather than contributors. If you wish to contribute to the compiler, you should read CONTRIBUTING.md instead.
Table of Contents
Quick Start
Read "Installation" from The Book.
Installing from Source
If you really want to install from source (though this is not recommended), see INSTALL.md.
Getting Help
See https://www.rust-lang.org/community for a list of chat platforms and forums.
Contributing
See CONTRIBUTING.md.
License
Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.
See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.
Trademark
The Rust Foundation owns and protects the Rust and Cargo trademarks and logos (the "Rust Trademarks").
If you want to use these names or brands, please read the media guide.
Third-party logos may be subject to third-party copyrights and trademarks. See Licenses for details.