6aa89f684e
KCFI needs to be able to tell which kind of `ReifyShim` it is examining in order to decide whether to use a concrete type (`FnPtr` case) or an abstract case (`Vtable` case). You can *almost* tell this from context, but there is one case where you can't - if a trait has a method which is *not* `#[track_caller]`, with an impl that *is* `#[track_caller]`, both the vtable and a function pointer created from that method will be `ReifyShim(def_id)`. Currently, the reason is optional to ensure no additional unique `ReifyShim`s are added without KCFI on. However, the case in which an extra `ReifyShim` is created is sufficiently rare that this may be worth revisiting to reduce complexity. |
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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.