---

yaml
---
r: 13717
b: refs/heads/master
c: 4812672
h: refs/heads/master
i:
  13715: a4183e2
v: v3

Author: pcwalton

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: 1228c55ef0ec41215054c5db1693b84fbb58674d
+refs/heads/master: 481267299d1c5a1ddcacf68ce1ce3f3fb48c0cd5
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 4a81779abd786ff22d71434c6d9a5917ea4cdfff
 refs/heads/try: 2898dcc5d97da9427ac367542382b6239d9c0bbf

trunk/src/rustc/middle/trans/base.rs

@@ -5456,17 +5456,12 @@ fn crate_ctxt_to_encode_parms(cx: @crate_ctxt)
 
     fn impl_map(cx: @crate_ctxt,
                 id: ast::node_id) -> [(ast::ident, ast::def_id)]/~ {
-        alt *cx.maps.impl_map.get(id) {
-          list::cons(impls, @list::nil) {
-            (*impls).map {|i|
-                (i.ident, i.did)
-            }
-          }
-          _ {
-            cx.sess.bug(#fmt("encode_info_for_mod: empty impl_map \
-                              entry for %?", id));
-          }
+        let mut result = []/~;
+        for list::each(cx.maps.impl_map.get(id)) {
+            |impls|
+            result += (*impls).map({|i| (i.ident, i.did) });
         }
+        ret result;
     }
 }