diff options
Diffstat (limited to 'tests/ui/associated-inherent-types/bugs')
5 files changed, 72 insertions, 0 deletions
diff --git a/tests/ui/associated-inherent-types/bugs/ice-substitution.rs b/tests/ui/associated-inherent-types/bugs/ice-substitution.rs new file mode 100644 index 000000000..53ac79e05 --- /dev/null +++ b/tests/ui/associated-inherent-types/bugs/ice-substitution.rs @@ -0,0 +1,23 @@ +// known-bug: unknown +// failure-status: 101 +// normalize-stderr-test "note: .*\n\n" -> "" +// normalize-stderr-test "thread 'rustc' panicked.*\n" -> "" +// rustc-env:RUST_BACKTRACE=0 + +// FIXME: I presume a type variable that couldn't be solved by `resolve_vars_if_possible` +// escapes the InferCtxt snapshot. + +#![feature(inherent_associated_types)] +#![allow(incomplete_features)] + +struct Cont<T>(T); + +impl<T: Copy> Cont<T> { + type Out = Vec<T>; +} + +pub fn weird<T: Copy>(x: T) { + let _: Cont<_>::Out = vec![true]; +} + +fn main() {} diff --git a/tests/ui/associated-inherent-types/bugs/ice-substitution.stderr b/tests/ui/associated-inherent-types/bugs/ice-substitution.stderr new file mode 100644 index 000000000..7b0d1c505 --- /dev/null +++ b/tests/ui/associated-inherent-types/bugs/ice-substitution.stderr @@ -0,0 +1,6 @@ +error: the compiler unexpectedly panicked. this is a bug. + +query stack during panic: +#0 [typeck] type-checking `weird` +#1 [typeck_item_bodies] type-checking all item bodies +end of query stack diff --git a/tests/ui/associated-inherent-types/bugs/inference-fail.rs b/tests/ui/associated-inherent-types/bugs/inference-fail.rs new file mode 100644 index 000000000..a920b412b --- /dev/null +++ b/tests/ui/associated-inherent-types/bugs/inference-fail.rs @@ -0,0 +1,15 @@ +// known-bug: unknown + +#![feature(inherent_associated_types)] +#![allow(incomplete_features)] + +struct S<T>(T); + +impl S<()> { + type P = i128; +} + +fn main() { + // We fail to infer `_ == ()` here. + let _: S<_>::P; +} diff --git a/tests/ui/associated-inherent-types/bugs/inference-fail.stderr b/tests/ui/associated-inherent-types/bugs/inference-fail.stderr new file mode 100644 index 000000000..425691bd6 --- /dev/null +++ b/tests/ui/associated-inherent-types/bugs/inference-fail.stderr @@ -0,0 +1,9 @@ +error[E0282]: type annotations needed + --> $DIR/inference-fail.rs:14:14 + | +LL | let _: S<_>::P; + | ^ cannot infer type + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0282`. diff --git a/tests/ui/associated-inherent-types/bugs/lack-of-regionck.rs b/tests/ui/associated-inherent-types/bugs/lack-of-regionck.rs new file mode 100644 index 000000000..632dbf385 --- /dev/null +++ b/tests/ui/associated-inherent-types/bugs/lack-of-regionck.rs @@ -0,0 +1,19 @@ +// known-bug: unknown +// check-pass + +// We currently don't region-check inherent associated type projections at all. + +#![feature(inherent_associated_types)] +#![allow(incomplete_features, dead_code)] + +struct S<T>(T); + +impl S<&'static ()> { + type T = (); +} + +fn usr<'a>() { + let _: S::<&'a ()>::T; // this should *fail* but it doesn't! +} + +fn main() {} |