diff -r b29160d1b3e0 -r ed354a00f76b src/share/classes/com/sun/tools/javac/processing/JavacMessager.java
--- a/src/share/classes/com/sun/tools/javac/processing/JavacMessager.java	Tue Jul 27 11:32:03 2010 -0700
+++ b/src/share/classes/com/sun/tools/javac/processing/JavacMessager.java	Tue Jul 27 11:52:11 2010 -0700
@@ -46,6 +46,7 @@
     Log log;
     JavacProcessingEnvironment processingEnv;
     int errorCount = 0;
+    int warningCount = 0;
 
     JavacMessager(Context context, JavacProcessingEnvironment processingEnv) {
         log = Log.instance(context);
@@ -116,10 +117,12 @@
                 break;
 
             case WARNING:
+                warningCount++;
                 log.warning(pos, "proc.messager", msg.toString());
                 break;
 
             case MANDATORY_WARNING:
+                warningCount++;
                 log.mandatoryWarning(pos, "proc.messager", msg.toString());
                 break;
 
@@ -167,6 +170,10 @@
         return errorCount;
     }
 
+    public int warningCount() {
+        return warningCount;
+    }
+
     public void newRound(Context context) {
         log = Log.instance(context);
         errorCount = 0;