Auto merge of #27133 - apasel422:issue-15919, r=rollup

closes #15919

src/test/compile-fail/issue-15919.rs

@@ -0,0 +1,21 @@
+// 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.
+
+// error-pattern: too big for the current architecture
+
+#[cfg(target_pointer_width = "32")]
+fn main() {
+    let x = [0usize; 0xffff_ffff];
+}
+
+#[cfg(target_pointer_width = "64")]
+fn main() {
+    let x = [0usize; 0xffff_ffff_ffff_ffff];
+}