35 lines
488 B
Rust
35 lines
488 B
Rust
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//@ revisions: rpass1 rpass2
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// issue#112680
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#![feature(decl_macro)]
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pub trait T {
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type Key;
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fn index_from_key(key: Self::Key) -> usize;
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}
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pub macro m($key_ty:ident, $val_ty:ident) {
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struct $key_ty {
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inner: usize,
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}
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impl T for $val_ty {
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type Key = $key_ty;
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fn index_from_key(key: Self::Key) -> usize {
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key.inner
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}
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}
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}
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m!(TestId, Test);
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#[cfg(rpass1)]
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struct Test(u32);
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#[cfg(rpass2)]
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struct Test;
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fn main() {}
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