1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/run-pass/unique-ffi-symbols.rs b/src/test/run-pass/unique-ffi-symbols.rs
new file mode 100644
index 00000000000..81563f40e94
--- /dev/null
+++ b/src/test/run-pass/unique-ffi-symbols.rs
@@ -0,0 +1,25 @@
+// Copyright 2016 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.
+
+// We used to have a __rust_abi shim that resulted in duplicated symbols
+// whenever the item path wasn't enough to disambiguate between them.
+fn main() {
+    let a = {
+        extern fn good() -> i32 { return 0; }
+        good as extern fn() -> i32
+    };
+    let b = {
+        extern fn good() -> i32 { return 5; }
+        good as extern fn() -> i32
+    };
+
+    assert!(a != b);
+    assert_eq!((a(), b()), (0, 5));
+}