The usual gcc-3.4 fixes.

  - Rene Rebe <rene@rocklinux.org>

--- tree-1.4/tree.c.orig	2004-05-03 19:31:28.000000000 +0200
+++ tree-1.4/tree.c	2004-05-03 19:30:48.000000000 +0200
@@ -1082,6 +1082,7 @@
       case '"':
       case '?':
       case '+':
+      ((void)0);
     }
   }
 }