7e8184fa2a
The commit adds "associated" to the description of associated types and associated consts, to match the description of associated functions. This increases error message precision and consistency with `AssocKind::fmt`. The commit also notes an imperfection in `AssocKind::fmt`; fixing this imperfection is possible but beyond the scope of this PR.
33 lines
1.1 KiB
Rust
33 lines
1.1 KiB
Rust
#![feature(generic_const_items)]
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#![allow(incomplete_features)]
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trait Trait<P> {
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const A: ();
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const B<const K: u64, const Q: u64>: u64;
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const C<T>: T;
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const D<const N: usize>: usize;
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const E<'a>: &'a ();
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const F: usize;
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const G<T: PartialEq>: ();
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}
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impl<P> Trait<P> for () {
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const A<T>: () = ();
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//~^ ERROR const `A` has 1 type parameter but its trait declaration has 0 type parameters
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const B<const K: u64>: u64 = 0;
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//~^ ERROR const `B` has 1 const parameter but its trait declaration has 2 const parameters
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const C<'a>: &'a str = "";
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//~^ ERROR const `C` has 0 type parameters but its trait declaration has 1 type parameter
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const D<const N: u16>: u16 = N;
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//~^ ERROR const `D` has an incompatible generic parameter for trait `Trait`
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const E: &'static () = &();
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//~^ ERROR lifetime parameters or bounds on associated const `E` do not match the trait declaration
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const F: usize = 1024
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where
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P: Copy; //~ ERROR impl has stricter requirements than trait
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const G<T: Eq>: () = (); //~ ERROR impl has stricter requirements than trait
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}
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fn main() {}
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