src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CompileUnit.java

*** 24,33 ****
--- 24,34 ----
   */
  
  package jdk.nashorn.internal.codegen;
  
  import java.io.Serializable;
+ import java.util.Objects;
  import java.util.Set;
  import java.util.TreeSet;
  import jdk.nashorn.internal.ir.CompileUnitHolder;
  
  /**
*** 111,121 ****
      /**
       * Set class when it exists. Only accessible from compiler
       * @param clazz class with code for this compile unit
       */
      void setCode(final Class<?> clazz) {
!         clazz.getClass(); // null check
          this.clazz = clazz;
          // Revisit this - refactor to avoid null-ed out non-final fields
          // null out emitter
          this.classEmitter = null;
      }
--- 112,122 ----
      /**
       * Set class when it exists. Only accessible from compiler
       * @param clazz class with code for this compile unit
       */
      void setCode(final Class<?> clazz) {
!         Objects.requireNonNull(clazz);
          this.clazz = clazz;
          // Revisit this - refactor to avoid null-ed out non-final fields
          // null out emitter
          this.classEmitter = null;
      }