fix tests

src/librustc_typeck/check/method/probe.rs

@@ -285,15 +285,6 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
 
         Some(steps)
     }
-
-    pub fn find_attr(&self, def_id: DefId, attr_name: &str) -> Option<ast::Attribute> {
-        for item in self.tcx.get_attrs(def_id).iter() {
-            if item.check_name(attr_name) {
-                return Some(item.clone());
-            }
-        }
-        None
-    }
 }
 
 impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
@@ -918,21 +909,21 @@ impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
             //Some(Ok(p)) => p.iter().map(|p| p.item.container().id()).collect(),
             Some(Err(MethodError::Ambiguity(v))) => {
                 v.into_iter()
-                    .map(|source| {
+                .map(|source| {
-                        match source {
+                    match source {
-                            TraitSource(id) => id,
+                        TraitSource(id) => id,
-                            ImplSource(impl_id) => {
+                        ImplSource(impl_id) => {
-                                match tcx.trait_id_of_impl(impl_id) {
+                            match tcx.trait_id_of_impl(impl_id) {
-                                    Some(id) => id,
+                                Some(id) => id,
-                                    None => {
+                                None => {
-                                        span_bug!(span,
+                                    span_bug!(span,
-                                                  "found inherent method when looking at traits")
+                                              "found inherent method when looking at traits")
-                                    }
                                 }
                             }
                         }
-                    })
+                    }
-                    .collect()
+                })
+                .collect()
             }
             Some(Err(MethodError::NoMatch(NoMatchData { out_of_scope_traits: others, .. }))) => {
                 assert!(others.is_empty());
@@ -957,25 +948,27 @@ impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
 
     fn pick_core(&mut self) -> Option<PickResult<'tcx>> {
         let steps = self.steps.clone();
-        let mut ret = Vec::new();
 
-        for step in steps.iter() {
+        match self.looking_for {
-            match self.pick_step(step) {
+            LookingFor::MethodName(_) => steps.iter()
-                Some(Ok(mut elems)) => ret.append(&mut elems),
+                                              .filter_map(|step| self.pick_step(step))
-                Some(Err(elem)) => {
+                                              .next(),
-                    match self.looking_for {
+            LookingFor::ReturnType(_) => {
-                        LookingFor::MethodName(_) => return Some(Err(elem)),
+                let mut ret = Vec::new();
-                        LookingFor::ReturnType(_) => {}
+
+                for step in steps.iter() {
+                    match self.pick_step(step) {
+                        Some(Ok(mut elems)) => ret.append(&mut elems),
+                        _ => {}
                     }
                 }
-                _ => {}
+                if ret.len() < 1 {
+                    None
+                } else {
+                    Some(Ok(ret))
+                }
             }
         }
-        if ret.len() < 1 {
-            None
-        } else {
-            Some(Ok(ret))
-        }
     }
 
     fn pick_step(&mut self, step: &CandidateStep<'tcx>) -> Option<PickResult<'tcx>> {
@@ -1028,12 +1021,12 @@ impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
         // In general, during probing we erase regions. See
         // `impl_self_ty()` for an explanation.
         let region = tcx.mk_region(ty::ReErased);
-        let mut res = Vec::new();
 
         // Search through mutabilities in order to find one where pick works:
-        for _ in [hir::MutImmutable, hir::MutMutable]
+        let mut elements = [hir::MutImmutable, hir::MutMutable];
-            .iter()
+        let mut it = elements
-            .filter_map(|&m| {
+            .iter_mut()
+            .filter_map(|&mut m| {
                 let autoref_ty = tcx.mk_ref(region,
                                             ty::TypeAndMut {
                                                 ty: step.self_ty,
@@ -1050,15 +1043,24 @@ impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
                                 None
                             };
                         }
-                        res.append(&mut picks);
+                        picks
                     })
                 })
-            }) {}
+            });
+        match self.looking_for {
+            LookingFor::MethodName(_) => it.nth(0),
+            LookingFor::ReturnType(_) => {
+                let mut ret = Vec::new();
+                it.filter_map(|entry| entry.ok())
+                  .map(|mut v| { ret.append(&mut v); })
+                  .all(|_| true);
 
-        if res.len() < 1 {
+                if ret.len() < 1 {
-            None
+                    None
-        } else {
+                } else {
-            Some(Ok(res))
+                    Some(Ok(ret))
+                }
+            }
         }
     }
 
@@ -1089,7 +1091,7 @@ impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
                            probes: &[Candidate<'tcx>],
                            possibly_unsatisfied_predicates: &mut Vec<TraitRef<'tcx>>)
                            -> Option<PickResult<'tcx>> {
-        let applicable_candidates: Vec<_> = probes.iter()
+        let mut applicable_candidates: Vec<_> = probes.iter()
             .filter(|&probe| self.consider_probe(self_ty, probe, possibly_unsatisfied_predicates))
             .collect();
 
@@ -1109,14 +1111,21 @@ impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
             return Some(Err(MethodError::Ambiguity(sources)));
         }
 
-        let ret: Vec<_> = applicable_candidates.iter()
+        match self.looking_for {
-                                               .map(|probe| probe.to_unadjusted_pick())
+            LookingFor::MethodName(_) => applicable_candidates
-                                               .collect();
+                .pop()
+                .map(|probe| Ok(vec![probe.to_unadjusted_pick()])),
+            LookingFor::ReturnType(_) => {
+                let ret: Vec<_> = applicable_candidates.iter()
+                                                       .map(|probe| probe.to_unadjusted_pick())
+                                                       .collect();
 
-        if ret.len() < 1 {
+                if ret.len() < 1 {
-            None
+                    None
-        } else {
+                } else {
-            Some(Ok(ret))
+                    Some(Ok(ret))
+                }
+            }
         }
     }
 

src/test/compile-fail/coerce_suggestions.rs

@@ -8,34 +8,40 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(box_syntax)]
+
 fn test(_x: &mut String) {}
 fn test2(_x: &mut i32) {}
 
 fn main() {
     let x: usize = String::new();
-    //^ ERROR E0308
+    //~^ ERROR E0308
-    //| NOTE expected type `usize`
+    //~| NOTE expected usize, found struct `std::string::String`
-    //| NOTE found type `std::string::String`
+    //~| NOTE expected type `usize`
-    //| NOTE here are some functions which might fulfill your needs:
+    //~| NOTE found type `std::string::String`
+    //~| HELP here are some functions which might fulfill your needs:
     let x: &str = String::new();
-    //^ ERROR E0308
+    //~^ ERROR E0308
-    //| NOTE expected type `&str`
+    //~| NOTE expected &str, found struct `std::string::String`
-    //| NOTE found type `std::string::String`
+    //~| NOTE expected type `&str`
-    //| NOTE try with `&String::new()`
+    //~| NOTE found type `std::string::String`
+    //~| HELP try with `&String::new()`
     let y = String::new();
     test(&y);
-    //^ ERROR E0308
+    //~^ ERROR E0308
-    //| NOTE expected type `&mut std::string::String`
+    //~| NOTE types differ in mutability
-    //| NOTE found type `&std::string::String`
+    //~| NOTE expected type `&mut std::string::String`
-    //| NOTE try with `&mut y`
+    //~| NOTE found type `&std::string::String`
+    //~| HELP try with `&mut y`
     test2(&y);
-    //^ ERROR E0308
+    //~^ ERROR E0308
-    //| NOTE expected type `&mut i32`
+    //~| NOTE types differ in mutability
-    //| NOTE found type `&std::string::String`
+    //~| NOTE expected type `&mut i32`
-    //| NOTE try with `&mut y`
+    //~| NOTE found type `&std::string::String`
     let f;
     f = box f;
-    //^ ERROR E0308
+    //~^ ERROR E0308
-    //| NOTE expected type `_`
+    //~| NOTE cyclic type of infinite size
-    //| NOTE found type `Box<_>`
+    //~| NOTE expected type `_`
+    //~| NOTE found type `Box<_>`
 }

src/test/compile-fail/coercion-slice.rs

@@ -14,6 +14,6 @@ fn main() {
     let _: &[i32] = [0];
     //~^ ERROR mismatched types
     //~| expected type `&[i32]`
-    //~| found type `[{integer}; 1]`
+    //~| found type `[i32; 1]`
     //~| expected &[i32], found array of 1 elements
 }

src/test/compile-fail/cross-borrow-trait.rs

@@ -22,4 +22,5 @@ pub fn main() {
                         //~| expected type `&Trait`
                         //~| found type `Box<Trait>`
                         //~| expected &Trait, found box
+                        //~^^^^ ERROR E0277
 }

src/test/compile-fail/dst-bad-coercions.rs

@@ -23,11 +23,13 @@ pub fn main() {
     let x: *const S = &S;
     let y: &S = x; //~ ERROR mismatched types
     let y: &T = x; //~ ERROR mismatched types
+                   //~^ ERROR E0277
 
     // Test that we cannot convert from *-ptr to &S and &T (mut version)
     let x: *mut S = &mut S;
     let y: &S = x; //~ ERROR mismatched types
     let y: &T = x; //~ ERROR mismatched types
+                   //~^ ERROR E0277
 
     // Test that we cannot convert an immutable ptr to a mutable one using *-ptrs
     let x: &mut T = &S; //~ ERROR mismatched types

src/test/compile-fail/issue-13058.rs

@@ -36,4 +36,5 @@ fn check<'r, I: Iterator<Item=usize>, T: Itble<'r, usize, I>>(cont: &T) -> bool
 fn main() {
     check((3, 5));
 //~^ ERROR mismatched types
+//~| HELP try with `&(3, 5)`
 }