1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/ui/generic-associated-types/generic-associated-types-where.rs b/src/test/ui/generic-associated-types/generic-associated-types-where.rs
new file mode 100644
index 000000000..2ecbc8c59
--- /dev/null
+++ b/src/test/ui/generic-associated-types/generic-associated-types-where.rs
@@ -0,0 +1,28 @@
+#![feature(generic_associated_types)]
+
+// Checking the interaction with this other feature
+#![feature(associated_type_defaults)]
+
+use std::fmt::{Display, Debug};
+
+trait Foo {
+    type Assoc where Self: Sized;
+    type Assoc2<T> where T: Display;
+    type Assoc3<T>;
+    type WithDefault<'a, T: Debug + 'a>: ?Sized = dyn Iterator<Item=T>;
+    type NoGenerics;
+}
+
+struct Bar;
+
+impl Foo for Bar {
+    type Assoc = usize;
+    type Assoc2<T> = Vec<T>;
+    //~^ ERROR `T` doesn't implement `std::fmt::Display`
+    type Assoc3<T> = Vec<T> where T: Iterator;
+    //~^ ERROR impl has stricter requirements than trait
+    type WithDefault<'a, T: Debug + 'a> = &'a dyn Iterator<Item=T>;
+    type NoGenerics = ::std::cell::Cell<i32>;
+}
+
+fn main() {}