1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/compile-fail/rustc-args-required-const.rs b/src/test/compile-fail/rustc-args-required-const.rs
new file mode 100644
index 00000000000..aac9299eaaf
--- /dev/null
+++ b/src/test/compile-fail/rustc-args-required-const.rs
@@ -0,0 +1,36 @@
+// Copyright 2018 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(attr_literals, rustc_attrs, const_fn)]
+
+#[rustc_args_required_const(0)]
+fn foo(_a: i32) {
+}
+
+#[rustc_args_required_const(1)]
+fn bar(_a: i32, _b: i32) {
+}
+
+const A: i32 = 3;
+
+const fn baz() -> i32 {
+    3
+}
+
+fn main() {
+    foo(2);
+    foo(2 + 3);
+    foo(baz());
+    let a = 4;
+    foo(A);
+    foo(a); //~ ERROR: argument 1 is required to be a constant
+    bar(a, 3);
+    bar(a, a); //~ ERROR: argument 2 is required to be a constant
+}