Rollup merge of #39700 - msopena:master, r=est31

Adding compile fail test for const_indexing feature

First attempt at contributing to rust. Picked up an easy feature to test.

Issue #39059
r? @est31

1 files changed, 17 insertions, 0 deletions

diff --git a/src/test/compile-fail/feature-gate-const-indexing.rs b/src/test/compile-fail/feature-gate-const-indexing.rs
new file mode 100644
index 00000000000..0d61878cd80
--- /dev/null
+++ b/src/test/compile-fail/feature-gate-const-indexing.rs
@@ -0,0 +1,17 @@
+// 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.
+
+
+fn main() {
+    const ARR: [i32; 6] = [42, 43, 44, 45, 46, 47];
+    const IDX: usize = 3;
+    const VAL: i32 = ARR[IDX];
+    const BLUB: [i32; (ARR[0] - 41) as usize] = [5]; //~ ERROR constant evaluation error
+}