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|
fn main() {}
macro_rules! expand_to_enum {
() => {
enum BadE {}
//~^ ERROR enum is not supported in `trait`s or `impl`s
//~| ERROR enum is not supported in `trait`s or `impl`s
//~| ERROR enum is not supported in `extern` blocks
};
}
macro_rules! mac_impl {
($($i:item)*) => {
struct S;
impl S { $($i)* }
}
}
mac_impl! {
struct BadS; //~ ERROR struct is not supported in `trait`s or `impl`s
expand_to_enum!();
}
macro_rules! mac_trait {
($($i:item)*) => {
trait T { $($i)* }
}
}
mac_trait! {
struct BadS; //~ ERROR struct is not supported in `trait`s or `impl`s
expand_to_enum!();
}
macro_rules! mac_extern {
($($i:item)*) => {
extern "C" { $($i)* }
}
}
mac_extern! {
struct BadS; //~ ERROR struct is not supported in `extern` blocks
expand_to_enum!();
}
|
