mirror of https://github.com/rust-lang/rust
70 lines
3.3 KiB
Rust
70 lines
3.3 KiB
Rust
// Regression test for issue #108271.
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// Detect and reject generic params in the type of assoc consts used in an equality bound.
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#![feature(associated_const_equality)]
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trait Trait<'a, T: 'a, const N: usize> {
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const K: &'a [T; N];
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}
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fn take0<'r, A: 'r, const Q: usize>(_: impl Trait<'r, A, Q, K = { loop {} }>) {}
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//~^ ERROR the type of the associated constant `K` must not depend on generic parameters
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//~| NOTE its type must not depend on the lifetime parameter `'r`
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//~| NOTE the lifetime parameter `'r` is defined here
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//~| NOTE `K` has type `&'r [A; Q]`
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//~| ERROR the type of the associated constant `K` must not depend on generic parameters
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//~| NOTE its type must not depend on the type parameter `A`
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//~| NOTE the type parameter `A` is defined here
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//~| NOTE `K` has type `&'r [A; Q]`
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//~| ERROR the type of the associated constant `K` must not depend on generic parameters
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//~| NOTE its type must not depend on the const parameter `Q`
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//~| NOTE the const parameter `Q` is defined here
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//~| NOTE `K` has type `&'r [A; Q]`
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trait Project {
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const SELF: Self;
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}
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fn take1(_: impl Project<SELF = {}>) {}
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//~^ ERROR the type of the associated constant `SELF` must not depend on `impl Trait`
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//~| NOTE its type must not depend on `impl Trait`
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//~| NOTE the `impl Trait` is specified here
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fn take2<P: Project<SELF = {}>>(_: P) {}
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//~^ ERROR the type of the associated constant `SELF` must not depend on generic parameters
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//~| NOTE its type must not depend on the type parameter `P`
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//~| NOTE the type parameter `P` is defined here
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//~| NOTE `SELF` has type `P`
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trait Iface<'r> {
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//~^ NOTE the lifetime parameter `'r` is defined here
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//~| NOTE the lifetime parameter `'r` is defined here
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type Assoc<const Q: usize>: Trait<'r, Self, Q, K = { loop {} }>
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//~^ ERROR the type of the associated constant `K` must not depend on generic parameters
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//~| ERROR the type of the associated constant `K` must not depend on generic parameters
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//~| NOTE its type must not depend on the lifetime parameter `'r`
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//~| NOTE `K` has type `&'r [Self; Q]`
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//~| ERROR the type of the associated constant `K` must not depend on `Self`
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//~| NOTE its type must not depend on `Self`
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//~| NOTE `K` has type `&'r [Self; Q]`
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//~| ERROR the type of the associated constant `K` must not depend on generic parameters
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//~| NOTE its type must not depend on the const parameter `Q`
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//~| NOTE the const parameter `Q` is defined here
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//~| NOTE `K` has type `&'r [Self; Q]`
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//~| NOTE its type must not depend on the lifetime parameter `'r`
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//~| NOTE `K` has type `&'r [Self; Q]`
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//~| ERROR the type of the associated constant `K` must not depend on `Self`
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//~| NOTE its type must not depend on `Self`
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//~| NOTE `K` has type `&'r [Self; Q]`
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//~| ERROR the type of the associated constant `K` must not depend on generic parameters
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//~| NOTE its type must not depend on the const parameter `Q`
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//~| NOTE the const parameter `Q` is defined here
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//~| NOTE `K` has type `&'r [Self; Q]`
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//~| NOTE duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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//~| NOTE duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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//~| NOTE duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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where
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Self: Sized + 'r;
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}
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fn main() {}
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