From 56389dd2e14934b926b5babb38fd8ae643079485 Mon Sep 17 00:00:00 2001
From: Joel Dice <git@seibutsu.mailsnare.net>
Date: Thu, 20 Mar 2008 18:37:21 -0600
Subject: [PATCH] don't populate interface vtables for abstract classes

---
 src/machine.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/machine.cpp b/src/machine.cpp
index 82f834db50..b812303b15 100644
--- a/src/machine.cpp
+++ b/src/machine.cpp
@@ -1279,7 +1279,9 @@ parseMethodTable(Thread* t, Stream& s, object class_, object pool)
     }
   }
 
-  if (populateInterfaceVtables) {
+  if (populateInterfaceVtables
+      and (classFlags(t, class_) & ACC_ABSTRACT) == 0)
+  {
     // generate interface vtables
     object itable = classInterfaceTable(t, class_);
     if (itable) {