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|
macro_rules! count {
( $( $e:stmt ),* ) => {
${ count($e) }
//~^ ERROR meta-variable expressions are unstable
};
}
macro_rules! dollar_dollar {
() => {
macro_rules! bar {
( $$( $$any:tt )* ) => { $$( $$any )* };
//~^ ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
}
};
}
macro_rules! index {
( $( $e:stmt ),* ) => {
$( ${ignore($e)} ${index()} )*
//~^ ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
};
}
macro_rules! ignore {
( $( $i:stmt ),* ) => {{
0 $( + 1 ${ignore($i)} )*
//~^ ERROR meta-variable expressions are unstable
}};
}
macro_rules! length {
( $( $e:stmt ),* ) => {
$( ${ignore($e)} ${length()} )*
//~^ ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
};
}
fn main() {
}
|
