1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/compile-fail-migration/catch-opt-init.rs b/src/test/ui/compile-fail-migration/catch-opt-init.rs
new file mode 100644
index 00000000000..0c41102e3be
--- /dev/null
+++ b/src/test/ui/compile-fail-migration/catch-opt-init.rs
@@ -0,0 +1,25 @@
+// Copyright 2017 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.
+
+#![feature(catch_expr)]
+
+fn use_val<T: Sized>(_x: T) {}
+
+pub fn main() {
+    let cfg_res;
+    let _: Result<(), ()> = do catch {
+        Err(())?;
+        cfg_res = 5;
+        Ok::<(), ()>(())?;
+        use_val(cfg_res);
+    };
+    assert_eq!(cfg_res, 5); //~ ERROR use of possibly uninitialized variable
+}
+