| #![feature(macro_metavar_expr_concat)] |
| |
| macro_rules! one_rep { |
| ( $($a:ident)* ) => { |
| $( |
| const ${concat($a, Z)}: i32 = 3; |
| )* |
| }; |
| } |
| |
| macro_rules! issue_128346 { |
| ( $($a:ident)* ) => { |
| A( |
| const ${concat($a, Z)}: i32 = 3; |
| //~^ ERROR invalid syntax |
| )* |
| }; |
| } |
| |
| macro_rules! issue_131393 { |
| ($t:ident $($en:ident)?) => { |
| read::<${concat($t, $en)}>() |
| //~^ ERROR invalid syntax |
| //~| ERROR invalid syntax |
| } |
| } |
| |
| fn main() { |
| one_rep!(A B C); |
| assert_eq!(AZ, 3); |
| assert_eq!(BZ, 3); |
| assert_eq!(CZ, 3); |
| issue_128346!(A B C); |
| issue_131393!(u8); |
| issue_131393!(u16 le); |
| } |