Fix for javac 9003176: Class reference duplicates in constant pool

9003176.patch

diff --git a/src/share/classes/com/sun/tools/javac/jvm/Pool.java b/src/share/classes/com/sun/tools/javac/jvm/Pool.java
--- a/src/share/classes/com/sun/tools/javac/jvm/Pool.java
+++ b/src/share/classes/com/sun/tools/javac/jvm/Pool.java
@@ -28,6 +28,7 @@
 import java.util.*;
 
 import com.sun.tools.javac.code.Symbol.*;
+import com.sun.tools.javac.code.Type.ClassType;
 
 /** An internal structure that corresponds to the constant pool of a classfile.
  *
@@ -100,6 +101,10 @@
             value = new Method((MethodSymbol)value);
         else if (value instanceof VarSymbol)
             value = new Variable((VarSymbol)value);
+        else if (value instanceof ClassType) {
+            ClassType ct = (ClassType) value;
+            value = ct.tsym;
+        }
 //      assert !(value instanceof Type.TypeVar);
         Integer index = indices.get(value);
         if (index == null) {