---

yaml
---
r: 224159
b: refs/heads/beta
c: abad7d6
h: refs/heads/master
i:
  224157: 5230cb9
  224155: 9af4770
  224151: 0b1c666
  224143: 48134a4
  224127: 8670ed6
v: v3

Author: pnkfelix

[refs]

@@ -23,7 +23,7 @@ refs/tags/0.9: 36870b185fc5f5486636d4515f0e22677493f225
 refs/tags/0.10: ac33f2b15782272ae348dbd7b14b8257b2148b5a
 refs/tags/0.11.0: e1247cb1d0d681be034adb4b558b5a0c0d5720f9
 refs/tags/0.12.0: f0c419429ef30723ceaf6b42f9b5a2aeb5d2e2d1
-refs/heads/beta: 505cd8a3cc9ddc89ff766a07cc90797421296d34
+refs/heads/beta: abad7d6bba9d3fa9d5f1126c8ef6f1b413db1152
 refs/tags/1.0.0-alpha: e42bd6d93a1d3433c486200587f8f9e12590a4d7
 refs/heads/tmp: 938f5d7af401e2d8238522fed4a612943b6e77fd
 refs/tags/1.0.0-alpha.2: 4c705f6bc559886632d3871b04f58aab093bfa2f

branches/beta/src/libcore/intrinsics.rs

@@ -190,7 +190,7 @@ extern "rust-intrinsic" {
     /// Drop glue is not run on the destination.
     pub fn move_val_init<T>(dst: *mut T, src: T);
 
-    // SNAP ba0e1cd
+    // SNAP d4432b3
     #[cfg(stage0)]
     /// Moves a value to an uninitialized memory location.
     ///

branches/beta/src/libsyntax/parse/parser.rs

@@ -2638,7 +2638,7 @@ impl<'a> Parser<'a> {
             // ... but for now: check for a place: `box(PLACE) EXPR`.
 
             if try!(self.eat(&token::OpenDelim(token::Paren)) ){
-                // SNAP ba0e1cd
+                // SNAP d4432b3
                 // Enable this warning after snapshot ...
                 //
                 // let box_span = mk_sp(lo, self.last_span.hi);
@@ -2659,9 +2659,15 @@ impl<'a> Parser<'a> {
                         self.span_err(span,
                                       &format!("expected expression, found `{}`",
                                               this_token_to_string));
+
+                        // Spanning just keyword avoids constructing
+                        // printout of arg expression (which starts
+                        // with parenthesis, as established above).
+
                         let box_span = mk_sp(lo, keyword_hi);
-                        let new_expr = format!("box () {}", pprust::expr_to_string(&place));
-                        self.span_suggestion(box_span, "try using `box ()` instead:", new_expr);
+                        self.span_suggestion(box_span,
+                                             "try using `box ()` instead:",
+                                             format!("box ()"));
                         self.abort_if_errors();
                     }
                     let subexpression = try!(self.parse_prefix_expr());