--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java	Fri Apr 07 15:46:31 2017 +0100
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java	Mon Apr 10 11:08:59 2017 +0200
@@ -3908,4 +3908,16 @@
         }
     }
 
+    void checkModuleRequires(final DiagnosticPosition pos, final RequiresDirective rd) {
+        if ((rd.module.flags() & Flags.AUTOMATIC_MODULE) != 0) {
+            deferredLintHandler.report(() -> {
+                if (rd.isTransitive() && lint.isEnabled(LintCategory.REQUIRES_TRANSITIVE_AUTOMATIC)) {
+                    log.warning(pos, Warnings.RequiresTransitiveAutomatic);
+                } else if (lint.isEnabled(LintCategory.REQUIRES_AUTOMATIC)) {
+                    log.warning(pos, Warnings.RequiresAutomatic);
+                }
+            });
+        }
+    }
+
 }