---

yaml
---
r: 152185
b: refs/heads/try2
c: 5527c5d
h: refs/heads/master
i:
  152183: 175f298
v: v3

Author: bors

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: b64046a5b072a34a0940785a9301669a2ea00031
+refs/heads/try2: 5527c5dc060754d7ca17c19886bc357ef29ec8fc
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/src/doc/guide-lifetimes.md

@@ -67,7 +67,7 @@ Now we can call `compute_distance()`:
 # let on_the_stack :     Point  =     Point{x: 3.0, y: 4.0};
 # let on_the_heap  : Box<Point> = box Point{x: 7.0, y: 9.0};
 # fn compute_distance(p1: &Point, p2: &Point) -> f64 { 0.0 }
-compute_distance(&on_the_stack, &*on_the_heap);
+compute_distance(&on_the_stack, on_the_heap);
 ~~~
 
 Here, the `&` operator takes the address of the variable
@@ -77,9 +77,10 @@ value. We also call this _borrowing_ the local variable
 `on_the_stack`, because we have created an alias: that is, another
 name for the same data.
 
-For the second argument, we need to extract the contents of `on_the_heap`
-by derefercing with the `*` symbol. Now that we have the data, we need
-to create a reference with the `&` symbol.
+In the case of `on_the_heap`, however, no explicit action is necessary. 
+The compiler will automatically convert a box box point to a reference like &point. 
+This is another form of borrowing; in this case, the contents of the owned box 
+are being lent out.
 
 Whenever a caller lends data to a callee, there are some limitations on what
 the caller can do with the original. For example, if the contents of a

branches/try2/src/doc/tutorial.md

@@ -1429,7 +1429,7 @@ contains a point, but allocated in a different location:
 ~~~
 # struct Point { x: f64, y: f64 }
 let on_the_stack :     Point  =     Point { x: 3.0, y: 4.0 };
-let owned_box    : Box<Point> = box Point { x: 7.0, y: 9.0 };
+let on_the_heap  : Box<Point> = box Point { x: 7.0, y: 9.0 };
 ~~~
 
 Suppose we want to write a procedure that computes the distance
@@ -1454,9 +1454,9 @@ Now we can call `compute_distance()` in various ways:
 ~~~
 # struct Point{ x: f64, y: f64 };
 # let on_the_stack :     Point  =     Point { x: 3.0, y: 4.0 };
-# let owned_box    : Box<Point> = box Point { x: 7.0, y: 9.0 };
+# let on_the_heap  : Box<Point> = box Point { x: 7.0, y: 9.0 };
 # fn compute_distance(p1: &Point, p2: &Point) -> f64 { 0.0 }
-compute_distance(&on_the_stack, owned_box);
+compute_distance(&on_the_stack, on_the_heap);
 ~~~
 
 Here the `&` operator is used to take the address of the variable

branches/try2/src/librustc/middle/typeck/check/_match.rs

@@ -298,9 +298,8 @@ pub fn check_pat_variant(pcx: &pat_ctxt, pat: &ast::Pat, path: &ast::Path,
 /// `etc` is true if the pattern said '...' and false otherwise.
 pub fn check_struct_pat_fields(pcx: &pat_ctxt,
                                span: Span,
-                               path: &ast::Path,
                                fields: &[ast::FieldPat],
-                               class_fields: Vec<ty::field_ty> ,
+                               class_fields: Vec<ty::field_ty>,
                                class_id: ast::DefId,
                                substitutions: &ty::substs,
                                etc: bool) {
@@ -333,13 +332,12 @@ pub fn check_struct_pat_fields(pcx: &pat_ctxt,
                 found_fields.insert(index);
             }
             None => {
-                let name = pprust::path_to_str(path);
                 // Check the pattern anyway, so that attempts to look
                 // up its type won't fail
                 check_pat(pcx, field.pat, ty::mk_err());
                 tcx.sess.span_err(span,
                     format!("struct `{}` does not have a field named `{}`",
-                            name,
+                            ty::item_path_str(tcx, class_id),
                             token::get_ident(field.ident)).as_slice());
             }
         }
@@ -390,7 +388,7 @@ pub fn check_struct_pat(pcx: &pat_ctxt, pat_id: ast::NodeId, span: Span,
         }
     }
 
-    check_struct_pat_fields(pcx, span, path, fields, class_fields, struct_id,
+    check_struct_pat_fields(pcx, span, fields, class_fields, struct_id,
                             substitutions, etc);
 }
 
@@ -413,7 +411,7 @@ pub fn check_struct_like_enum_variant_pat(pcx: &pat_ctxt,
             // Get the struct fields from this struct-like enum variant.
             let class_fields = ty::lookup_struct_fields(tcx, variant_id);
 
-            check_struct_pat_fields(pcx, span, path, fields, class_fields,
+            check_struct_pat_fields(pcx, span, fields, class_fields,
                                     variant_id, substitutions, etc);
         }
         Some(&ast::DefStruct(..)) | Some(&ast::DefVariant(..)) => {

branches/try2/src/test/compile-fail/issue-14541.rs

@@ -0,0 +1,20 @@
+// 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.
+
+struct vec2 { y: f32 }
+struct vec3 { y: f32, z: f32 }
+
+fn make(v: vec2) {
+    let vec3 { y: _, z: _ } = v;
+    //~^ ERROR mismatched types: expected `vec2` but found `vec3`
+    //~^^ ERROR struct `vec2` does not have a field named `z`
+}
+
+fn main() { }