8357503: gcbasher fails with java.lang.IllegalArgumentException: Unknown constant pool type

Reviewed-by: dholmes

Author: Alexey Semenyuk

test/hotspot/jtreg/gc/stress/gcbasher/Decompiler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -258,6 +258,7 @@ private ConstantPoolEntry[] decodeConstantPool() {
         final int CONSTANT_NameAndType = 12;
         final int CONSTANT_MethodHandle = 15;
         final int CONSTANT_MethodType = 16;
+        final int CONSTANT_Dynamic = 17;
         final int CONSTANT_InvokeDynamic = 18;
 
         ConstantPoolEntry[] constantPool = new ConstantPoolEntry[cursor.readUnsignedShort()];
@@ -319,6 +320,11 @@ private ConstantPoolEntry[] decodeConstantPool() {
                     cursor.readUnsignedShort(); // descriptor_index
                     break;
 
+                case CONSTANT_Dynamic:
+                    cursor.readUnsignedShort(); // bootstrap_method_attr_index
+                    cursor.readUnsignedShort(); // name_and_type_index
+                    break;
+
                 case CONSTANT_InvokeDynamic:
                     cursor.readUnsignedShort(); // bootstrap_method_attr_index
                     cursor.readUnsignedShort(); // name_and_type_index