In JDK-8234049 code was updated to trust all classes from 'java/lang' package.

  if (holder->is_in_package("java/lang/invoke") || holder->is_in_package("sun/invoke") ||
      holder->is_in_package("java/lang/reflect") || holder->is_in_package("jdk/internal/reflect") ||
      holder->is_in_package("jdk/internal/foreign/layout") || holder->is_in_package("jdk/internal/foreign") ||
      holder->is_in_package("jdk/internal/vm/vector") || holder->is_in_package("jdk/incubator/vector") ||
      holder->is_in_package("java/lang"))
    return true;

It means separate String check now is not needed.

  if (holder->name() == ciSymbols::java_lang_String())
    return true;