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