26 lines
557 B
Rust
26 lines
557 B
Rust
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#![crate_type = "lib"]
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#![feature(transmutability)]
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trait A {
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type AssocA;
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}
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trait B {
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type AssocB: std::mem::TransmuteFrom<()>;
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}
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impl<T> B for (T, u8)
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where
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T: A,
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{
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type AssocB = T::AssocA; //~ERROR: the trait bound `<T as A>::AssocA: TransmuteFrom<(), Assume { alignment: false, lifetimes: false, safety: false, validity: false }>` is not satisfied [E0277]
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}
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impl<T> B for (T, u16)
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where
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for<'a> &'a i32: A,
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{
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type AssocB = <&'static i32 as A>::AssocA; //~ERROR: `()` cannot be safely transmuted into `<&i32 as A>::AssocA`
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}
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