}
(Place::Promoted(p1), Place::Promoted(p2)) => {
if p1.0 == p2.0 {
+ if let ty::TyArray(_, size) = p1.1.sty {
+ if size.unwrap_usize(tcx) == 0 {
+ // Ignore conflicts with promoted [T; 0].
+ debug!("place_element_conflict: IGNORE-LEN-0-PROMOTED");
+ return Overlap::Disjoint;
+ }
+ }
// the same promoted - base case, equal
debug!("place_element_conflict: DISJOINT-OR-EQ-PROMOTED");
Overlap::EqualOrDisjoint
--- /dev/null
+// 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.
+
+// Check that mutable promoted length zero arrays don't check for conflicting
+// access
+
+// run-pass
+
+#![feature(nll)]
+
+pub fn main() {
+ let mut x: Vec<&[i32; 0]> = Vec::new();
+ for i in 0..10 {
+ x.push(&[]);
+ }
+}