Normalize types before collecting obligations

Fixes #22828
Fixes #22629

src/test/run-pass/issue-22629.rs

@@ -0,0 +1,20 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test transitive analysis for associated types. Collected types
+// should be normalized and new obligations generated.
+
+use std::borrow::{ToOwned, Cow};
+
+fn assert_send<T: Send>(_: T) {}
+
+fn main() {
+    assert_send(Cow::Borrowed("foo"));
+}

src/test/run-pass/issue-22828.rs

@@ -0,0 +1,29 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test transitive analysis for associated types. Collected types
+// should be normalized and new obligations generated.
+
+trait Foo {
+    type A;
+    fn foo(&self) {}
+}
+
+impl Foo for usize {
+    type A = usize;
+}
+
+struct Bar<T: Foo> { inner: T::A }
+
+fn is_send<T: Send>() {}
+
+fn main() {
+    is_send::<Bar<usize>>();
+}