1 files changed, 2 insertions, 0 deletions
diff --git a/build2/parser b/build2/parser
index 89f42b8..f038b97 100644
--- a/build2/parser
+++ b/build2/parser
@@ -445,6 +445,8 @@ namespace build2
     const fail_mark<failed> fail;
 
   protected:
+    bool pre_parse_ = false;
+
     bool boot_;
 
     const path* path_; // Current path.