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Reimplement the most important structs and traits for testing #19

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2 changes: 2 additions & 0 deletions .gitignore
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target
Cargo.lock
5 changes: 5 additions & 0 deletions Cargo.toml
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[package]
authors = ["The Allocators WG"]
name = "wg-allocators"
version = "0.0.0"
edition = "2018"
10 changes: 10 additions & 0 deletions README.md
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Expand Up @@ -19,7 +19,17 @@ To be notified of every issue and pull request in this repository, try GitHub’

For lower-latency discussion, we have the [`t-libs/wg-allocators`] stream on Zulip.

## Code

In order to test different features, we mirrored some code from [rust-lang/rust].
Currently, this includes `Alloc`, `AllocErr`, `CannotRealocInPlace`, `Excess`, `Layout`, `LayoutErr`, `Global` and `Box`.
Additionally, the following functions are adjusted to work with our `Layout`: `alloc`, `alloc_zeroed`, `dealloc`, `realloc`, and `handle_alloc_error`.

However, a few things had to be adjusted to match the `alloc` crate as soon as possible:
- the `Drop` trait of `Box` calls `box_free` directly.
- for `Fn`, `FnOnce`, `FnMut`, and `FnBox` `F` has to implement `Copy`

[rust-lang/rust]: https://github.com/rust-lang/rust
[`std::alloc::Alloc`]: https://doc.rust-lang.org/1.34.0/std/alloc/trait.Alloc.html
[RFC #1398]: https://github.com/rust-lang/rfcs/pull/1398 "Allocators, take III"
[tracking issue #32838]: https://github.com/rust-lang/rust/issues/32838 "Allocator traits and std::heap"
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