From 1821a11704143a89581b26e285d968230b86a8ac Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 10 Feb 2017 17:27:55 +0200
Subject: Track variable value modifications

---
 build2/scope.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'build2/scope.cxx')

diff --git a/build2/scope.cxx b/build2/scope.cxx
index 0b76647..aaa0077 100644
--- a/build2/scope.cxx
+++ b/build2/scope.cxx
@@ -507,7 +507,7 @@ namespace build2
     lookup l (find_original (var).first);
 
     if (l.defined () && l.belongs (*this)) // Existing var in this scope.
-      return const_cast<value&> (*l); // Ok since this is original.
+      return vars.modify (l); // Ok since this is original.
 
     value& r (assign (var)); // NULL.
 
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