pub fn resolve_impl(tcx: &ty::ctxt,
impl_item: &ast::Item,
impl_generics: &ty::Generics,
- impl_trait_ref: &ty::TraitRef) {
+ impl_trait_ref: &ty::TraitRef)
+{
let param_env = ty::construct_parameter_environment(
tcx,
None,
lookup_vtables_for_param(&vcx, impl_item.span, None,
¶m_bounds, t, false);
+ infcx.resolve_regions_and_report_errors();
let res = impl_res {
trait_vtables: vtbls,
--- /dev/null
+// Copyright 2014 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 when we test the supertrait we ensure consistent use of
+// lifetime parameters. In this case, implementing T2<'a,'b> requires
+// an impl of T1<'a>, but we have an impl of T1<'b>.
+
+trait T1<'x> {
+ fn x(&self) -> &'x int;
+}
+
+trait T2<'x, 'y> : T1<'x> {
+ fn y(&self) -> &'y int;
+}
+
+struct S<'a, 'b> {
+ a: &'a int,
+ b: &'b int
+}
+
+impl<'a,'b> T1<'b> for S<'a, 'b> {
+ fn x(&self) -> &'b int {
+ self.b
+ }
+}
+
+impl<'a,'b> T2<'a, 'b> for S<'a, 'b> { //~ ERROR cannot infer an appropriate lifetime
+ fn y(&self) -> &'b int {
+ self.b
+ }
+}
+
+pub fn main() {
+}