39 lines
1016 B
Rust
39 lines
1016 B
Rust
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// ICE Where clause `Binder(..)` was applicable to `Obligation(..)` but now is not
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// issue: rust-lang/rust#84727
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struct Cell<Fg, Bg = Fg> {
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foreground: Color<Fg>,
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//~^ ERROR cannot find type `Color` in this scope
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background: Color<Bg>,
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//~^ ERROR cannot find type `Color` in this scope
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}
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trait Over<Bottom, Output> {
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fn over(self) -> Output;
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}
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impl<TopFg, TopBg, BottomFg, BottomBg, NewFg, NewBg>
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Over<Cell<BottomFg, BottomBg>, Cell<NewFg, NewBg>> for Cell<TopFg, TopBg>
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where
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Self: Over<Color<BottomBg>, Cell<NewFg>>,
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//~^ ERROR cannot find type `Color` in this scope
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{
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fn over(self) -> Cell<NewFg> {
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//~^ ERROR mismatched types
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self.over();
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}
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}
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impl<'b, TopFg, TopBg, BottomFg, BottomBg> Over<&Cell<BottomFg, BottomBg>, ()>
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for Cell<TopFg, TopBg>
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where
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Cell<TopFg, TopBg>: Over<Cell<BottomFg>, Cell<BottomFg>>,
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{
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fn over(self) -> Cell<NewBg> {
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//~^ ERROR cannot find type `NewBg` in this scope
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self.over();
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}
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}
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pub fn main() {}
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