From 8d8b3d985a02153a349e72bd9840231b43c51864 Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Mon, 28 Feb 2011 19:07:26 -0800
Subject: rustc: Mark tags that have subtypes with dynamic size as dynamic

---
 src/comp/middle/ty.rs | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src')

diff --git a/src/comp/middle/ty.rs b/src/comp/middle/ty.rs
index 25ef8709..8b9ef6d1 100644
--- a/src/comp/middle/ty.rs
+++ b/src/comp/middle/ty.rs
@@ -471,6 +471,13 @@ fn type_has_dynamic_size(@t ty) -> bool {
                 i += 1u;
             }
         }
+        case (ty_tag(_, ?subtys)) {
+            auto i = 0u;
+            while (i < _vec.len[@t](subtys)) {
+                if (type_has_dynamic_size(subtys.(i))) { ret true; }
+                i += 1u;
+            }
+        }
         case (ty_param(_)) { ret true; }
         case (_) { /* fall through */ }
     }
-- 
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