let outside_ty = gcx.fold_regions(&inside_ty, &mut false, |r, _| {
match *r {
// 'static is valid everywhere.
- ty::ReStatic => gcx.mk_region(ty::ReStatic),
+ ty::ReStatic |
+ ty::ReEmpty => gcx.mk_region(*r),
// Free regions that come from early-bound regions are valid.
ty::ReFree(ty::FreeRegion {
}
ty::ReVar(_) |
- ty::ReEmpty |
ty::ReErased => {
let span = reason.span(self.tcx());
span_bug!(span, "invalid region in impl Trait: {:?}", r);
--- /dev/null
+// Copyright 2016 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(conservative_impl_trait)]
+
+fn func<'a, T>(a: &'a [T]) -> impl Iterator<Item=&'a T> {
+ a.iter().map(|a| a*a)
+ //~^ ERROR binary operation `*` cannot be applied to type `&T`
+}
+
+fn main() {
+ let a = (0..30).collect::<Vec<_>>();
+
+ for k in func(&a) {
+ println!("{}", k);
+ }
+}