rust/tests/ui/resolve/generic-params-from-outer-item-in-const-item.rs
2024-02-16 20:02:50 +00:00

40 lines
1.1 KiB
Rust

// Regression test for issue #115720.
// If a const item contains generic params from an outer items, only suggest
// turning the const item generic if the feature `generic_const_items` is enabled.
//@ revisions: default generic_const_items
#![cfg_attr(generic_const_items, feature(generic_const_items))]
#![feature(generic_const_exprs)] // only used for the test case "outer struct"
#![allow(incomplete_features)]
fn outer<T: Tr>() { // outer function
const K: u32 = T::C;
//~^ ERROR can't use generic parameters from outer item
//[generic_const_items]~| HELP try introducing a local generic parameter here
}
impl<T> Tr for T { // outer impl block
const C: u32 = {
const I: u32 = T::C;
//~^ ERROR can't use generic parameters from outer item
//[generic_const_items]~| HELP try introducing a local generic parameter here
I
};
}
struct S<T: Tr>(U32<{ // outer struct
const _: u32 = T::C;
//~^ ERROR can't use generic parameters from outer item
//[generic_const_items]~| HELP try introducing a local generic parameter here
0
}>);
trait Tr {
const C: u32;
}
struct U32<const N: u32>;
fn main() {}