rust/tests/ui/explicit-tail-calls/in-closure.rs

#![expect(incomplete_features)]
#![feature(explicit_tail_calls)]

fn main() {
    || become f(); //~ error: `become` is not allowed in closures
}

fn f() {}
use `expect(incomplete_feature)` instead of `allow` in tail call tests 2024-11-29 03:28:02 +00:00			`#![expect(incomplete_features)]`
implement checks for tail calls this implements checks necessary to guarantee that we can actually perform a tail call. while extremely restrictive, this is what is documented in the RFC, and all these checks are needed for one reason or another. 2023-05-11 11:43:09 +00:00			`#![feature(explicit_tail_calls)]`

			`fn main() {`
			\|\| become f(); //~ error: `become` is not allowed in closures
			`}`

			`fn f() {}`