Correctly collect defaults from type alises in astconv

1 files changed, 17 insertions, 0 deletions

diff --git a/src/test/run-pass/default_ty_param_type_alias.rs b/src/test/run-pass/default_ty_param_type_alias.rs
new file mode 100644
index 00000000000..c3e44e55bee
--- /dev/null
+++ b/src/test/run-pass/default_ty_param_type_alias.rs
@@ -0,0 +1,17 @@
+// 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.
+
+use std::collections::HashMap;
+
+type IntMap<K=usize> = HashMap<K, usize>;
+
+fn main() {
+    let x = IntMap::new();
+}