mirror of https://github.com/rust-lang/rust
18 lines
497 B
Rust
18 lines
497 B
Rust
//@ known-bug: #109481
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//
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// While the `T: Copy` is always applicable when checking
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// that the impl `impl<T: Copy> F for T {}` is well formed,
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// the old trait solver can only approximate this by checking
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// that there are no inference variables in the obligation and
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// no region constraints in the evaluation result.
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//
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// Because of this we end up with ambiguity here.
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#![feature(marker_trait_attr)]
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#[marker]
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pub trait F {}
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impl<T: Copy> F for T {}
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impl<T: 'static> F for T {}
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fn main() {}
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