src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/Target.java

rev 50632 : [mq]: defaultroots

*** 158,163 ****
--- 158,170 ----
      /** Value of platform release used to access multi-release jar files
       */
      public String multiReleaseValue() {
          return Integer.toString(this.ordinal() - Target.JDK1_1.ordinal() + 1);
      }
+ 
+     /** All modules that export an API are roots when compiling code in the unnamed
+      *  module and targeting 11 or newer.
+      */
+     public boolean allApiModulesAreRoots() {
+         return compareTo(JDK1_11) >= 0;
+     }
  }