Fix Flags

diff --git a/ast b/ast
index 7a595b66afa08bb840222b7297e08e030e2232eb..42250676d6164fdc0b8505b0939cb21713cf6782 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 7a595b66afa08bb840222b7297e08e030e2232eb
+Subproject commit 42250676d6164fdc0b8505b0939cb21713cf6782