rustc-ap-arena 612.0.0

Automatically published version of the package `arena` in the rust-lang/rust repository from commit d28a9c38fe14396e86ae274c7847e20ee0f78ca9 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish
docs.rs failed to build rustc-ap-arena-612.0.0
Please check the build logs and, if you believe this is docs.rs' fault, open an issue.

The arena, a fast but limited type of allocator.

Arenas are a type of allocator that destroy the objects within, all at once, once the arena itself is destroyed. They do not support deallocation of individual objects while the arena itself is still alive. The benefit of an arena is very fast allocation; just a pointer bump.

This crate implements TypedArena, a simple arena that can only hold objects of a single type.