Fix from niko for cfail tests

Author: alexcrichton

src/librustc_typeck/check/implicator.rs

@@ -329,6 +329,9 @@ impl<'a, 'tcx> Implicator<'a, 'tcx> {
     fn accumulate_from_assoc_types_transitive(&mut self,
                                               data: &ty::PolyTraitPredicate<'tcx>)
     {
+        debug!("accumulate_from_assoc_types_transitive({})",
+               data.repr(self.tcx()));
+
         for poly_trait_ref in traits::supertraits(self.tcx(), data.to_poly_trait_ref()) {
             match ty::no_late_bound_regions(self.tcx(), &poly_trait_ref) {
                 Some(trait_ref) => { self.accumulate_from_assoc_types(trait_ref); }
@@ -340,13 +343,18 @@ impl<'a, 'tcx> Implicator<'a, 'tcx> {
     fn accumulate_from_assoc_types(&mut self,
                                    trait_ref: Rc<ty::TraitRef<'tcx>>)
     {
+        debug!("accumulate_from_assoc_types({})",
+               trait_ref.repr(self.tcx()));
+
         let trait_def_id = trait_ref.def_id;
         let trait_def = ty::lookup_trait_def(self.tcx(), trait_def_id);
         let assoc_type_projections: Vec<_> =
             trait_def.associated_type_names
                      .iter()
                      .map(|&name| ty::mk_projection(self.tcx(), trait_ref.clone(), name))
                      .collect();
+        debug!("accumulate_from_assoc_types: assoc_type_projections={}",
+               assoc_type_projections.repr(self.tcx()));
         let tys = match self.fully_normalize(&assoc_type_projections) {
             Ok(tys) => { tys }
             Err(ErrorReported) => { return; }

src/test/compile-fail/regions-assoc-type-in-supertrait-outlives-container.rs

@@ -15,12 +15,12 @@
 
 #![allow(dead_code)]
 
+use std::marker::PhantomFn;
+
 ///////////////////////////////////////////////////////////////////////////
 
-pub trait TheTrait {
+pub trait TheTrait: PhantomFn<Self, Self> {
     type TheAssocType;
-
-    fn dummy(&self) { }
 }
 
 pub trait TheSubTrait : TheTrait {

src/test/compile-fail/regions-assoc-type-outlives-container-hrtb.rs

@@ -14,12 +14,12 @@
 #![allow(dead_code)]
 #![feature(rustc_attrs)]
 
+use std::marker::PhantomFn;
+
 ///////////////////////////////////////////////////////////////////////////
 
-pub trait TheTrait<'b> {
+pub trait TheTrait<'b> : PhantomFn<Self,Self> {
     type TheAssocType;
-
-    fn dummy(&'b self) { }
 }
 
 pub struct TheType<'b> {

src/test/compile-fail/regions-assoc-type-outlives-container-wc.rs

@@ -15,12 +15,12 @@
 
 #![allow(dead_code)]
 
+use std::marker::PhantomFn;
+
 ///////////////////////////////////////////////////////////////////////////
 
-pub trait TheTrait {
+pub trait TheTrait: PhantomFn<Self, Self> {
     type TheAssocType;
-
-    fn dummy(&self) { }
 }
 
 pub struct TheType<'b> {

src/test/compile-fail/regions-assoc-type-outlives-container.rs

@@ -13,13 +13,14 @@
 // outlive the location in which the type appears. Issue #22246.
 
 #![allow(dead_code)]
+#![feature(rustc_attrs)]
+
+use std::marker::PhantomFn;
 
 ///////////////////////////////////////////////////////////////////////////
 
-pub trait TheTrait {
+pub trait TheTrait: PhantomFn<Self, Self> {
     type TheAssocType;
-
-    fn dummy(&self) { }
 }
 
 pub struct TheType<'b> {