--- a/langtools/src/share/classes/com/sun/tools/javac/jvm/ClassReader.java	Tue Mar 29 16:41:18 2011 +0100
+++ b/langtools/src/share/classes/com/sun/tools/javac/jvm/ClassReader.java	Wed Mar 30 18:18:11 2011 -0700
@@ -1162,6 +1162,9 @@
         ClassSymbol c = readClassSymbol(nextChar());
         NameAndType nt = (NameAndType)readPool(nextChar());
 
+        if (c.members_field == null)
+            throw badClassFile("bad.enclosing.class", self, c);
+
         MethodSymbol m = findMethod(nt, c.members_field, self.flags());
         if (nt != null && m == null)
             throw badClassFile("bad.enclosing.method", self);