Well, there is work on a Rust compiler on top of GCC:


https://github.com/Rust-GCC/gccrs

This is a full alternative implementation of the Rust language on top of GCC with the goal to become fully upstream with the GNU toolchain.

bitdevs

Rust is an existential threat.

Well, there is work on a Rust compiler on top of GCC:
https://github.com/Rust-GCC/gccrs
> GCC Front-End For Rust
>
> This is a full alternative implementation of the Rust language on top of GCC with the goal to become fully upstream with the GNU toolchain.