src/java.base/share/classes/java/lang/StackStreamFactory.java

*** 980,996 ****
      private static boolean isMethodHandleFrame(Class<?> c) {
          return c.getName().startsWith("java.lang.invoke.");
      }
  
      private static boolean isReflectionFrame(Class<?> c) {
-         if (c.getName().startsWith("jdk.internal.reflect") &&
-                 !MethodAccessor.class.isAssignableFrom(c) &&
-                 !ConstructorAccessor.class.isAssignableFrom(c)) {
-             throw new InternalError("Not jdk.internal.reflect.MethodAccessor"
-                     + " or jdk.internal.reflect.ConstructorAccessor: "
-                     + c.toString());
-         }
          // ## should filter all @Hidden frames?
          return c == Method.class ||
                 c == Constructor.class ||
                 MethodAccessor.class.isAssignableFrom(c) ||
                 ConstructorAccessor.class.isAssignableFrom(c) ||
--- 980,989 ----