1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/associated-types/issue-26681.rs b/src/test/ui/associated-types/issue-26681.rs
new file mode 100644
index 000000000..a0a8c86d9
--- /dev/null
+++ b/src/test/ui/associated-types/issue-26681.rs
@@ -0,0 +1,20 @@
+#![feature(associated_type_defaults)]
+
+// This is a partial regression test for #26681, which used to fail to resolve
+// `Self` in the assoc. constant, and now fails with a type mismatch because
+// `Self::Fv` cannot be assumed to equal `u8` inside the trait.
+
+trait Foo {
+    type Bar;
+}
+
+impl Foo for u8 {
+    type Bar = ();
+}
+
+trait Baz {
+    type Fv: Foo = u8;
+    const C: <Self::Fv as Foo>::Bar = 6665;  //~ error: mismatched types
+}
+
+fn main() {}