librustc: Remove cross borrowing from mutable `Box`es to `&mut`.

This will break code like:

    fn f(x: &mut int) {}

    let mut a = box 1i;
    f(a);

Change it to:

    fn f(x: &mut int) {}

    let mut a = box 1i;
    f(&mut *a);

RFC 33; issue #10504.

[breaking-change]

2 files changed, 7 insertions, 7 deletions

diff --git a/src/test/bench/shootout-k-nucleotide.rs b/src/test/bench/shootout-k-nucleotide.rs
index 9b2b46d0a5a..fe0744e5e7c 100644
--- a/src/test/bench/shootout-k-nucleotide.rs
+++ b/src/test/bench/shootout-k-nucleotide.rs
@@ -115,16 +115,16 @@ impl Table {
                     count: 0,
                     next: None,
                 };
-                c.f(entry);
+                c.f(&mut *entry);
                 item.next = Some(entry);
             }
             Some(ref mut entry) => {
                 if entry.code == key {
-                    c.f(*entry);
+                    c.f(&mut **entry);
                     return;
                 }
 
-                Table::search_remainder(*entry, key, c)
+                Table::search_remainder(&mut **entry, key, c)
             }
         }
     }
@@ -139,7 +139,7 @@ impl Table {
                     count: 0,
                     next: None,
                 };
-                c.f(entry);
+                c.f(&mut *entry);
                 *self.items.get_mut(index as uint) = Some(entry);
                 return;
             }
@@ -148,11 +148,11 @@ impl Table {
         {
             let entry = &mut *self.items.get_mut(index as uint).get_mut_ref();
             if entry.code == key {
-                c.f(*entry);
+                c.f(&mut **entry);
                 return;
             }
 
-            Table::search_remainder(*entry, key, c)
+            Table::search_remainder(&mut **entry, key, c)
         }
     }
 
diff --git a/src/test/bench/sudoku.rs b/src/test/bench/sudoku.rs
index 4a81deaf529..f0988bcfcf4 100644
--- a/src/test/bench/sudoku.rs
+++ b/src/test/bench/sudoku.rs
@@ -138,7 +138,7 @@ impl Sudoku {
             let mut avail = box Colors::new(start_color);
 
             // drop colors already in use in neighbourhood
-            self.drop_colors(avail, row, col);
+            self.drop_colors(&mut *avail, row, col);
 
             // find first remaining color that is available
             let next = avail.next();