Fix some nested patterns in rustc

In rustc, nested patterns were potentially matching when they shouldn't
match, because a loop index wasn't being incremented. Fixed it and added
one test case.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/comp/middle/trans.rs b/src/comp/middle/trans.rs
index 75c7aa8448b..a37308dda9b 100644
--- a/src/comp/middle/trans.rs
+++ b/src/comp/middle/trans.rs
@@ -3772,6 +3772,8 @@ fn trans_pat_match(@block_ctxt cx, @ast.pat pat, ValueRef llval,
                     auto subpat_res = trans_pat_match(matched_cx, subpat,
                                                       llsubval, next_cx);
                     matched_cx = subpat_res.bcx;
+
+                    i += 1;
                 }
             }