mirror of https://github.com/rust-lang/rust
22 lines
414 B
Rust
22 lines
414 B
Rust
#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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trait Foo<const N: usize> {
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fn test(&self) -> [u8; N + 1];
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}
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impl<const N: usize> Foo<N> for () {
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fn test(&self) -> [u8; N + 1] {
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[0; N + 1]
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}
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}
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fn use_dyn<const N: usize>(v: &dyn Foo<N>) where [u8; N + 1]: Sized {
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assert_eq!(v.test(), [0; N + 1]);
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}
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fn main() {
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use_dyn(&());
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//~^ ERROR type annotations needed
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}
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