From 712797797e442454ce434d71f8a412dfe9081c67 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Tue, 6 Oct 2009 20:58:10 +0000
Subject: [PATCH] trivial rename

---
 dtool/src/dtoolutil/filename.cxx | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dtool/src/dtoolutil/filename.cxx b/dtool/src/dtoolutil/filename.cxx
index 61fdf3077c..cd90e619b7 100644
--- a/dtool/src/dtoolutil/filename.cxx
+++ b/dtool/src/dtoolutil/filename.cxx
@@ -2405,6 +2405,12 @@ unlink() const {
 bool Filename::
 rename_to(const Filename &other) const {
   assert(!get_pattern());
+
+  if (*this == other) {
+    // Trivial success.
+    return true;
+  }
+
   string os_specific = to_os_specific();
   string other_os_specific = other.to_os_specific();