No warning for an associated constant always hidden by an enum variant (original) (raw)
To my great surprise, this compiles fine, with no warnings:
pub enum Foo { A(i32), } impl Foo { pub const A: Self = Foo::A(0); }
Trying to actually use that constant, however, doesn't work:
pub fn demo() -> Foo { Foo::A }
error[E0308]: mismatched types
--> src/lib.rs:9:5
|
2 | A(i32),
| ------ fn(i32) -> Foo {Foo::A} defined here
...
8 | pub fn demo() -> Foo {
| --- expected Foo because of return type
9 | Foo::A
| ^^^^^^ expected enum Foo, found fn item
|
= note: expected enum Foo
found fn item fn(i32) -> Foo {Foo::A}
help: use parentheses to instantiate this tuple variant
|
9 | Foo::A(_)
| ^^^
If that constant is going to compile, it should probably at least be linted against.