rwlock_test: added more internal error checking.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@10592 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/drd/tests/rwlock_test.vgtest b/drd/tests/rwlock_test.vgtest
index 6ce0263..b8c874e 100644
--- a/drd/tests/rwlock_test.vgtest
+++ b/drd/tests/rwlock_test.vgtest
@@ -1 +1,2 @@
+vgopts: --check-stack-var=yes --read-var-info=yes --show-confl-seg=no
 prog: rwlock_test