mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-11 08:05:12 +00:00
81 lines
1.6 KiB
Rust
81 lines
1.6 KiB
Rust
|
// Regression test for #57597.
|
||
|
//
|
||
|
// Make sure that nested matchers work correctly rather than causing an infinite loop or crash.
|
||
|
|
||
|
// edition:2018
|
||
|
|
||
|
macro_rules! foo1 {
|
||
|
($($($i:ident)?)+) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo2 {
|
||
|
($($($i:ident)?)*) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo3 {
|
||
|
($($($i:ident)?)?) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo4 {
|
||
|
($($($($i:ident)?)?)?) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo5 {
|
||
|
($($($($i:ident)*)?)?) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo6 {
|
||
|
($($($($i:ident)?)*)?) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo7 {
|
||
|
($($($($i:ident)?)?)*) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo8 {
|
||
|
($($($($i:ident)*)*)?) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo9 {
|
||
|
($($($($i:ident)?)*)*) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo10 {
|
||
|
($($($($i:ident)?)*)+) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo11 {
|
||
|
($($($($i:ident)+)?)*) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
macro_rules! foo12 {
|
||
|
($($($($i:ident)+)*)?) => {};
|
||
|
//~^ ERROR repetition matches empty token tree
|
||
|
}
|
||
|
|
||
|
fn main() {
|
||
|
foo1!();
|
||
|
foo2!();
|
||
|
foo3!();
|
||
|
foo4!();
|
||
|
foo5!();
|
||
|
foo6!();
|
||
|
foo7!();
|
||
|
foo8!();
|
||
|
foo9!();
|
||
|
foo10!();
|
||
|
foo11!();
|
||
|
foo12!();
|
||
|
}
|