From 5e2874a0fa9f043855a8c9e9bd1c02879b1f4c85 Mon Sep 17 00:00:00 2001
From: Tim Edwards <tim@opencircuitdesign.com>
Date: Wed, 30 May 2018 22:51:13 -0400
Subject: [PATCH] Fixed a crash condition on saving a backup file if a
 cellDef's cd_file entry is NULL, relying on cd_name instead.

---
 database/DBio.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/database/DBio.c b/database/DBio.c
index e04f6a9a..8a4f2be9 100644
--- a/database/DBio.c
+++ b/database/DBio.c
@@ -2363,7 +2363,10 @@ DBCellWriteFile(cellDef, f)
      * plane being searched.
      */
 
-    arg.wa_name = cellDef->cd_file;
+    if (cellDef->cd_file)
+	arg.wa_name = cellDef->cd_file;
+    else
+	arg.wa_name = cellDef->cd_name;
     arg.wa_file = f;
     arg.wa_reducer = reducer;
     for (type = TT_PAINTBASE; type < DBNumUserLayers; type++)