src/java.base/share/classes/java/lang/invoke/StringConcatFactory.java

@@ -43,11 +43,11 @@
 import java.util.concurrent.ConcurrentMap;
 import java.util.function.Function;
 
 import static java.lang.invoke.MethodHandles.lookup;
 import static java.lang.invoke.MethodType.methodType;
-import static java.lang.invoke.MethodHandleNatives.Constants.*;
+import static java.lang.invoke.MethodHandles.Lookup.ClassOption.*;
 import static jdk.internal.org.objectweb.asm.Opcodes.*;
 
 /**
  * <p>Methods to facilitate the creation of String concatenation methods, that
  * can be used to efficiently concatenate a known number of arguments of known

@@ -1140,11 +1140,11 @@
             mv.visitEnd();
             cw.visitEnd();
 
             byte[] classBytes = cw.toByteArray();
             try {
-                Class<?> innerClass = lookup.defineHiddenClass(classBytes,true).lookupClass();
+                Class<?> innerClass = lookup.defineHiddenClass(classBytes, true, STRONG).lookupClass();
                 dumpIfEnabled(className, classBytes);
                 return lookup.findStatic(innerClass, METHOD_NAME, args);
             } catch (Exception e) {
                 dumpIfEnabled(className + "$$FAILED", classBytes);
                 throw new StringConcatException("Exception while spinning the class", e);