mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 06:51:58 +00:00
35 lines
698 B
Rust
35 lines
698 B
Rust
// check-pass
|
|
// aux-build:issue-79242.rs
|
|
|
|
// Regression test for issue #79242
|
|
// Tests that compilation time doesn't blow up for a proc-macro
|
|
// invocation with deeply nested nonterminals
|
|
|
|
#![allow(unused)]
|
|
|
|
extern crate issue_79242;
|
|
|
|
macro_rules! declare_nats {
|
|
($prev:ty) => {};
|
|
($prev:ty, $n:literal$(, $tail:literal)*) => {
|
|
|
|
issue_79242::dummy! {
|
|
$prev
|
|
}
|
|
|
|
declare_nats!(Option<$prev>$(, $tail)*);
|
|
};
|
|
(0, $($n:literal),+) => {
|
|
pub struct N0;
|
|
declare_nats!(N0, $($n),+);
|
|
};
|
|
}
|
|
|
|
declare_nats! {
|
|
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
|
|
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28
|
|
}
|
|
|
|
|
|
fn main() {}
|