Regression test for #3902

Closes #3902.

src/test/run-pass/trait-static-method-generic-inference.rs

@@ -0,0 +1,40 @@
+// Copyright 2014 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.
+
+mod base {
+    pub trait HasNew<T> {
+        fn new() -> T;
+    }
+
+    pub struct Foo {
+        dummy: (),
+    }
+
+    impl HasNew<Foo> for Foo {
+        fn new() -> Foo {
+            Foo { dummy: () }
+        }
+    }
+
+    pub struct Bar {
+        dummy: (),
+    }
+
+    impl HasNew<Bar> for Bar {
+        fn new() -> Bar {
+            Bar { dummy: () }
+        }
+    }
+}
+
+pub fn main() {
+    let _f: base::Foo = base::HasNew::new();
+    let _b: base::Bar = base::HasNew::new();
+}