6980724: test/tools/javac/InterfaceAssert.java sometimes fails

Reviewed-by: darcy
diff --git a/langtools/test/tools/javac/InterfaceAssert.java b/langtools/test/tools/javac/InterfaceAssert.java
index aa8f2a7..0668475 100644
--- a/langtools/test/tools/javac/InterfaceAssert.java
+++ b/langtools/test/tools/javac/InterfaceAssert.java
@@ -23,9 +23,11 @@
 
 /*
  * @test
- * @bug 4399129
+ * @bug 4399129 6980724
  * @summary Check that assertions compile properly when nested in an interface
  * @author gafter
+ * @compile InterfaceAssert.java
+ * @run main InterfaceAssert
  */
 
 /*