From 620217b86080eab4d5f827ed07640d51deec9d56 Mon Sep 17 00:00:00 2001
From: susinxy <susinxy@sina.com>
Date: Sat, 1 Jan 2022 13:48:42 +0800
Subject: [PATCH] fix tech file load error with qflow

---
 utils/tech.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/utils/tech.c b/utils/tech.c
index e6feaff1..a3529273 100644
--- a/utils/tech.c
+++ b/utils/tech.c
@@ -476,8 +476,13 @@ TechLoad(filename, initmask)
 
 	/* If a non-standard extension was used, then honor it */
 	if ((dptr != NULL) && (*dptr != '\0'))
+    {
 	    tf = PaOpen(filename, "r", (char *)NULL, ".", SysLibPath, &realname);
-	else
+        /* If the honored file in not there, try the filename with the suffix */
+        if (tf == (FILE *) NULL)
+	        tf = PaOpen(filename, "r", suffix, ".", SysLibPath, &realname);
+    }
+    else
 	    tf = PaOpen(filename, "r", suffix, ".", SysLibPath, &realname);
 
 	if (tf == (FILE *) NULL)