1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/compile-fail/const-err.rs b/src/test/compile-fail/const-err.rs
new file mode 100644
index 00000000000..be67e06d99f
--- /dev/null
+++ b/src/test/compile-fail/const-err.rs
@@ -0,0 +1,36 @@
+// Copyright 2012 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.
+
+#[allow(exceeding_bitshifts)]
+#[deny(const_err)]
+
+fn black_box<T>(_: T) {
+    unimplemented!()
+}
+
+const BLA: u8 = 200u8 + 200u8;
+//~^ ERROR attempted to add with overflow
+
+fn main() {
+    let a = -std::i8::MIN;
+    //~^ WARN attempted to negate with overflow
+    let b = 200u8 + 200u8 + 200u8;
+    //~^ WARN attempted to add with overflow
+    //~^^ WARN attempted to add with overflow
+    let c = 200u8 * 4;
+    //~^ WARN attempted to mul with overflow
+    let d = 42u8 - (42u8 + 1);
+    //~^ WARN attempted to sub with overflow
+    let _e = BLA;
+    black_box(a);
+    black_box(b);
+    black_box(c);
+    black_box(d);
+}