Resolve prefix in imports with empty braces

src/test/compile-fail/issue-28388-1.rs

@@ -0,0 +1,15 @@
+// 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.
+
+// Prefix in imports with empty braces should be resolved and checked privacy, stability, etc.
+
+use foo::{}; //~ ERROR failed to resolve. foo
+
+fn main() {}

src/test/compile-fail/issue-28388-2.rs

@@ -0,0 +1,19 @@
+// 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.
+
+// Prefix in imports with empty braces should be resolved and checked privacy, stability, etc.
+
+mod m {
+    mod n {}
+}
+
+use m::n::{}; //~ ERROR module `n` is private
+
+fn main() {}

src/test/compile-fail/issue-28388-3.rs

@@ -0,0 +1,16 @@
+// 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.
+
+// Prefix in imports with empty braces should be resolved and checked privacy, stability, etc.
+
+use std::rt::{}; //~ ERROR use of unstable library feature 'rt'
+use std::{}; // OK
+
+fn main() {}