The backend was derived from the go backend which enables split stack
support by default. This inserts a __morestack call at the start of
each function. This is not needed for the rust backend. Remove the
split stack support code from the rust backend and spec.
---
gcc/rust/rust-backend.h | 12 +++
When expect_token fails it produces an error and return a
nullptr. Make sure to always check the result of expect_token so we
don't use a nullptr token and crash.
Resolves: https://github.com/Rust-GCC/gccrs/issues/603
---
gcc/rust/parse/rust-parse-impl.h | 27 +++
1 file c
