1 files changed, 38 insertions, 0 deletions
diff --git a/src/test/ui/associated-types/associated-types-binding-in-where-clause.rs b/src/test/ui/associated-types/associated-types-binding-in-where-clause.rs
new file mode 100644
index 000000000..c54bc3cd6
--- /dev/null
+++ b/src/test/ui/associated-types/associated-types-binding-in-where-clause.rs
@@ -0,0 +1,38 @@
+// run-pass
+// Test equality constraints on associated types in a where clause.
+
+// pretty-expanded FIXME #23616
+
+pub trait Foo {
+    type A;
+    fn boo(&self) -> <Self as Foo>::A;
+}
+
+#[derive(PartialEq)]
+pub struct Bar;
+
+impl Foo for isize {
+    type A = usize;
+    fn boo(&self) -> usize { 42 }
+}
+
+impl Foo for char {
+    type A = Bar;
+    fn boo(&self) -> Bar { Bar }
+}
+
+fn foo_bar<I: Foo<A=Bar>>(x: I) -> Bar {
+    x.boo()
+}
+
+fn foo_uint<I: Foo<A=usize>>(x: I) -> usize {
+    x.boo()
+}
+
+pub fn main() {
+    let a = 42;
+    foo_uint(a);
+
+    let a = 'a';
+    foo_bar(a);
+}