diff -r 8e638442522a -r 732510cc3538 src/share/classes/com/sun/tools/javac/jvm/ClassWriter.java
--- a/src/share/classes/com/sun/tools/javac/jvm/ClassWriter.java	Fri Jan 29 16:54:52 2010 -0800
+++ b/src/share/classes/com/sun/tools/javac/jvm/ClassWriter.java	Mon Feb 01 17:05:35 2010 -0800
@@ -965,11 +965,11 @@
          // Class extends and implements clauses
         case CLASS_EXTENDS:
         case CLASS_EXTENDS_GENERIC_OR_ARRAY:
-            databuf.appendByte(p.type_index);
+            databuf.appendChar(p.type_index);
             break;
         // throws
         case THROWS:
-            databuf.appendByte(p.type_index);
+            databuf.appendChar(p.type_index);
             break;
         case CLASS_LITERAL:
         case CLASS_LITERAL_GENERIC_OR_ARRAY: