From f85d46a0cbc436d23ccf364d1140f728f951d6f6 Mon Sep 17 00:00:00 2001
From: stefan schippers <stefan.schippers@gmail.com>
Date: Thu, 22 Jun 2023 08:16:19 +0200
Subject: [PATCH] save_schematic(): avoid copying schname to
 xctx->sch[xctx->currsch] if dest == src

---
 src/save.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/save.c b/src/save.c
index a88066b0..deabdecd 100644
--- a/src/save.c
+++ b/src/save.c
@@ -2330,8 +2330,11 @@ int save_schematic(const char *schname) /* 20171020 added return value */
   xRect *rect;
   int rects;
 
-  if( strcmp(schname,"") ) my_strdup2(_ALLOC_ID_, &xctx->sch[xctx->currsch], schname);
-  else return 0;
+  if( strcmp(schname,"")) {
+    if(!xctx->sch[xctx->currsch] || strcmp(schname, xctx->sch[xctx->currsch])) {
+       my_strdup2(_ALLOC_ID_, &xctx->sch[xctx->currsch], schname);
+    }
+  } else return 0;
   dbg(1, "save_schematic(): currsch=%d name=%s\n",xctx->currsch, schname);
   dbg(1, "save_schematic(): sch[currsch]=%s\n", xctx->sch[xctx->currsch]);
   /* dbg(1, "save_schematic(): abs_sym_path=%s\n", abs_sym_path(xctx->sch[xctx->currsch], "")); */