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We already had this behavior on `std`. It was omitted when no-`std` due to deferring to `spin::Mutex`, which does not track poisoning at all. This increases the parity of the two. Part of https://github.com/serai-dex/serai/issues/698.
std shims
std-shims is a Rust crate with two purposes:
- Expand the functionality of
coreandalloc - Polyfill functionality only available on newer version of Rust
The goal is to make supporting no-std environments, and older versions of
Rust, as simple as possible. For most use cases, replacing std:: with
std_shims:: and adding use std_shims::prelude::* is sufficient to take full
advantage of std-shims.
API Surface
std-shims only aims to have items mutually available between alloc (with
extra dependencies) and std publicly exposed. Items exclusive to std, with
no shims available, will not be exported by std-shims.
Dependencies
HashSet and HashMap are provided via hashbrown. Synchronization
primitives are provided via spin (avoiding a requirement on
critical-section). Sections of std::io are independently matched as
possible. rustversion is used to detect when to provide polyfills.
Disclaimer
No guarantee of one-to-one parity is provided. The shims provided aim to be sufficient for the average case. Pull requests are welcome.