rust/tests/ui/explicit-tail-calls/become-macro.rs

//@ check-pass
#![expect(incomplete_features)]
#![feature(explicit_tail_calls, decl_macro)]

macro call($f:expr $(, $args:expr)* $(,)?) {
    ($f)($($args),*)
}

fn main() {
    become call!(f);
}

fn f() {}
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			`//@ check-pass`
use `expect(incomplete_feature)` instead of `allow` in tail call tests 2024-11-29 04:28:02 +01:00			`#![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, decl_macro)]`

			`macro call($f:expr $(, $args:expr)* $(,)?) {`
			`($f)($($args),*)`
			`}`

			`fn main() {`
			`become call!(f);`
			`}`

			`fn f() {}`