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// run-pass
// Test that failing macro matchers will not cause pre-expansion errors
// even though they use a feature that is pre-expansion gated.
#[allow(unused_macro_rules)]
macro_rules! m {
($e:expr) => { 0 }; // This fails on the input below due to `, foo`.
($e:expr,) => { 1 }; // This also fails to match due to `foo`.
(box $e:expr, foo) => { 2 }; // Successful matcher, we should get `2`.
}
fn main() {
assert_eq!(2, m!(box 42, foo));
}
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