tests/ui/macros/feature-gate-expr_fragment_specifier_2024.rs


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//@  compile-flags: --edition=2024 -Z unstable-options

macro_rules! m {
    ($e:expr_2021) => { //~ ERROR: fragment specifier `expr_2021` is unstable
        $e
    };
}

fn main() {
    m!(());
}