diff -r 000000000000 -r 959103a6100f test/tools/javac/Diagnostics/6722234/T6722234b.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/Diagnostics/6722234/T6722234b.java	Wed Apr 27 01:34:52 2016 +0800
@@ -0,0 +1,18 @@
+/**
+ * @test /nodynamiccopyright/
+ * @bug     6722234
+ * @summary javac diagnostics need better integration with the type-system
+ * @author  mcimadamore
+ * @compile/fail/ref=T6722234b_1.out -XDrawDiagnostics -XDdiags=simpleNames T6722234b.java
+ * @compile/fail/ref=T6722234b_2.out -XDrawDiagnostics -XDdiags=simpleNames,where T6722234b.java
+ */
+
+import java.util.*;
+
+class T6722234b {
+    <T> void m(List<T> l1, List<T> l2) {}
+
+    void test(List<? extends T6722234b> list) {
+        m(list, list);
+    }
+}