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25 lines
662 B
Rust
25 lines
662 B
Rust
#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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pub struct Foo<const N: usize, const M: usize = { N + 1 }>;
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pub fn needs_evaluatable_bound<const N1: usize>() -> Foo<N1> {
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//~^ error: unconstrained generic constant
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loop {}
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}
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pub fn has_evaluatable_bound<const N1: usize>() -> Foo<N1> where [(); N1 + 1]: {
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loop {}
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}
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type FooAlias<const N: usize, const NP: usize = { N + 1 }> = [(); NP];
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fn needs_evaluatable_bound_alias<T, const N: usize>() -> FooAlias<N>
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{
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//~^^ error: unconstrained generic constant
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todo!()
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}
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fn has_evaluatable_bound_alias<const N: usize>() -> FooAlias<N>
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where [(); N + 1]: {
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todo!()
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}
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fn main() {}
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