mirror of https://github.com/rust-lang/rust
32 lines
697 B
Rust
32 lines
697 B
Rust
trait Trait {}
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impl Trait for () {}
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fn bad_echo<T>(_t: T) -> T {
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"this should not suggest impl Trait" //~ ERROR mismatched types
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}
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fn bad_echo_2<T: Trait>(_t: T) -> T {
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"this will not suggest it, because that would probably be wrong" //~ ERROR mismatched types
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}
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fn other_bounds_bad<T>() -> T
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where
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T: Send,
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Option<T>: Send,
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{
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"don't suggest this, because Option<T> places additional constraints" //~ ERROR mismatched types
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}
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// FIXME: implement this check
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trait GenericTrait<T> {}
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fn used_in_trait<T>() -> T
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where
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T: Send,
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(): GenericTrait<T>,
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{
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"don't suggest this, because the generic param is used in the bound." //~ ERROR mismatched types
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}
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fn main() {}
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