frontend: fix missing location

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/src/frontend/explain_assert.nit b/src/frontend/explain_assert.nit
index b2350a4..326f588 100644 (file)
--- a/src/frontend/explain_assert.nit
+++ b/src/frontend/explain_assert.nit
@@ -35,6 +35,7 @@ module explain_assert
 import astbuilder
 intrude import literal # for value=
 intrude import typing # for mtype=
+import astvalidation
 
 import explain_assert_api
 
@@ -145,7 +146,9 @@ private class ExplainAssertVisitor
                end
 
                # Set the expression value aside
+               var old_parent = v_expr.parent
                var expr = v_expr.make_var_read
+               if old_parent != null then old_parent.validate
 
                # Protect nullable types
                if mtype isa MNullType then