src/jdk.compiler/share/classes/com/sun/tools/javac/main/Arguments.java

*** 596,608 ****
          if (fm.hasLocation(StandardLocation.MODULE_SOURCE_PATH)) {
              if (!options.isSet(Option.PROC, "only")
                      && !fm.hasLocation(StandardLocation.CLASS_OUTPUT)) {
                  log.error(Errors.NoOutputDir);
              }
-             if (options.isSet(Option.XMODULE)) {
-                 log.error(Errors.XmoduleNoModuleSourcepath);
-             }
          }
  
          if (fm.hasLocation(StandardLocation.ANNOTATION_PROCESSOR_MODULE_PATH) &&
              fm.hasLocation(StandardLocation.ANNOTATION_PROCESSOR_PATH)) {
              log.error(Errors.ProcessorpathNoProcessormodulepath);
--- 596,605 ----