--- lib-src/README	2016/03/27 17:37:06	1.2
+++ lib-src/README	2016/09/10 16:24:43	1.4
@@ -1,2 +1,11 @@
 This directory contains sources and breadcrumbs to build jtreg as
 checked in to jsr166/lib.
+
+Peruse ./build-jtreg after exploding the tarball.
+
+Somehow JTRegModuleHelper.class did not get included in jtreg.jar.
+To avoid
+    [jtreg] Cannot find class java/lang/reflect/JTRegModuleHelper.class to init patch directory
+I hand compiled JTRegModuleHelper.java and updated jtreg.jar
+  javac -d . -cp ../../../jsr166/lib/\* ./src/share/classes/java/lang/reflect/JTRegModuleHelper.java
+  jar uf ../../../jsr166/lib/jtreg.jar java