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https://github.com/rust-lang/rust
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18 lines
359 B
Rust
18 lines
359 B
Rust
#![allow(incomplete_features)]
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#![feature(generic_const_exprs)]
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#![feature(specialization)]
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pub trait Trait {
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type Type;
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}
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impl<T: ?Sized> Trait for T {
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default type Type = [u8; 1];
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}
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impl<T: Trait> Trait for *const T {
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type Type = [u8; std::mem::size_of::<<T as Trait>::Type>()];
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//~^ ERROR: unconstrained generic constant
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}
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fn main() {}
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