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Diffstat (limited to '')
-rw-r--r-- | tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.rs b/tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.rs new file mode 100644 index 000000000..d4cc380fa --- /dev/null +++ b/tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.rs @@ -0,0 +1,20 @@ +// compile-flags: -Ztrait-solver=next + +// check that a `alias-eq(<?0 as TraitB>::Assoc, <T as TraitB>::Assoc)` goal fails. + +// FIXME(deferred_projection_equality): add a test that this is true during coherence + +trait TraitB { + type Assoc; +} + +fn needs_a<T: TraitB>() -> T::Assoc { + unimplemented!() +} + +fn bar<T: TraitB>() { + let _: <_ as TraitB>::Assoc = needs_a::<T>(); + //~^ error: type annotations needed +} + +fn main() {} |