From 7b1568d19c565f8ce411eb37fe0d0032c6e0c93c Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Wed, 26 Apr 2017 10:27:42 +0200
Subject: make -d:nimdiff feature more robust

---
 compiler/cgen.nim | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'compiler/cgen.nim')

diff --git a/compiler/cgen.nim b/compiler/cgen.nim
index fd15d0793..b27d9cbce 100644
--- a/compiler/cgen.nim
+++ b/compiler/cgen.nim
@@ -1315,8 +1315,11 @@ proc shouldRecompile(code: Rope, cfile: Cfile): bool =
   if optForceFullMake notin gGlobalOptions:
     if not equalsFile(code, cfile.cname):
       if isDefined("nimdiff"):
-        copyFile(cfile.cname, cfile.cname & ".backup")
-        echo "diff ", cfile.cname, ".backup ", cfile.cname
+        if fileExists(cfile.cname):
+          copyFile(cfile.cname, cfile.cname & ".backup")
+          echo "diff ", cfile.cname, ".backup ", cfile.cname
+        else:
+          echo "new file ", cfile.cname
       writeRope(code, cfile.cname)
       return
     if existsFile(cfile.obj) and os.fileNewer(cfile.obj, cfile.cname):
-- 
cgit 1.4.1-2-gfad0