From e72a16a339092359e58ac7626ea89d4182b26642 Mon Sep 17 00:00:00 2001
From: Ben Burdette <bburdette@gmail.com>
Date: Tue, 30 Jun 2020 11:00:51 -0600
Subject: [PATCH] check for a null symbol

---
 src/libutil/error.hh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/libutil/error.hh b/src/libutil/error.hh
index 1e6102ce1..6982e30aa 100644
--- a/src/libutil/error.hh
+++ b/src/libutil/error.hh
@@ -67,7 +67,11 @@ struct ErrPos {
     {
         line = pos.line;
         column = pos.column;
-        file = pos.file;
+        // is file symbol null?
+        if (pos.file.set())
+            file = pos.file;
+        else
+            file = "";
         return *this;
     }