rust/src/test/ui/macros/macro-outer-attributes.rs
Vadim Petrochenkov ea4ad555d7 Introduce #[rustc_dummy] attribute and use it in tests
Unlike other built-in attributes, this attribute accepts any input
2019-06-08 23:55:25 +03:00

20 lines
390 B
Rust

#![feature(rustc_attrs)]
macro_rules! test { ($nm:ident,
#[$a:meta],
$i:item) => (mod $nm { #[$a] $i }); }
test!(a,
#[cfg(qux)],
pub fn bar() { });
test!(b,
#[cfg(not(qux))],
pub fn bar() { });
// test1!(#[bar])
#[rustc_dummy]
fn main() {
a::bar(); //~ ERROR cannot find function `bar` in module `a`
b::bar();
}