test and fix for 172107

tests/src/org/aspectj/systemtest/ajc160/Ajc160Tests.java

@@ -143,6 +143,8 @@ public class Ajc160Tests extends org.aspectj.testing.XMLBasedAjcTestCase {
 		runTest("Suppress warnings2");
 	}
  
+  public void testNullReturnedFromGetField_pr172107() { runTest("null returned from getField()"); }
+	
   /////////////////////////////////////////
   public static Test suite() {
     return XMLBasedAjcTestCase.loadSuite(Ajc160Tests.class);

tests/src/org/aspectj/systemtest/ajc160/ajc160.xml

@@ -139,6 +139,11 @@
         </run>
     </ajc-test>
     
+    <ajc-test dir="bugs160/pr172107" title="null returned from getField()"
+		keywords="pr172107">
+        <compile files="ReadWriteAJBug172107.java,Instrumentation.aj"/>
+		<run class="ReadWriteAJBug172107"/>
+    </ajc-test>
     
  <!-- second section - need a 1.6 vm -->