1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/wf/hir-wf-canonicalized.rs b/tests/ui/wf/hir-wf-canonicalized.rs
new file mode 100644
index 000000000..bdb84409d
--- /dev/null
+++ b/tests/ui/wf/hir-wf-canonicalized.rs
@@ -0,0 +1,18 @@
+// incremental
+
+trait Foo {
+    type V;
+}
+
+trait Callback<T: Foo>: Fn(&Bar<'_, T>, &T::V) {}
+
+struct Bar<'a, T> {
+    callback: Box<dyn Callback<dyn Callback<Bar<'a, T>>>>,
+    //~^ ERROR the trait bound `Bar<'a, T>: Foo` is not satisfied
+    //~| ERROR the trait bound `(dyn Callback<Bar<'a, T>, for<'b, 'c, 'd> Output = ()> + 'static): Foo` is not satisfied
+    //~| ERROR the size for values of type `(dyn Callback<Bar<'a, T>, for<'b, 'c, 'd> Output = ()> + 'static)` cannot be known at compilation time
+}
+
+impl<T: Foo> Bar<'_, Bar<'_, T>> {}
+
+fn main() {}