1 files changed, 5 insertions, 1 deletions
diff --git a/src/libutil/error.hh b/src/libutil/error.hh
index a9da72b54..4e86666fe 100644
--- a/src/libutil/error.hh
+++ b/src/libutil/error.hh
@@ -82,7 +82,11 @@ struct ErrPos {
         origin = pos.origin;
         line = pos.line;
         column = pos.column;
-        file = pos.file;
+        // is file symbol null?
+        if (pos.file.set())
+            file = pos.file;
+        else
+            file = "";
         return *this;
     }