From 6181102e45f690f9155d468c7dcc6a573e174a17 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Wed, 5 May 2004 00:20:32 +0000
Subject: [PATCH] prevent self-copy from being destructive

---
 pandatool/src/cvscopy/cvsCopy.cxx | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pandatool/src/cvscopy/cvsCopy.cxx b/pandatool/src/cvscopy/cvsCopy.cxx
index eb859f7ab3..8e0edf9787 100644
--- a/pandatool/src/cvscopy/cvsCopy.cxx
+++ b/pandatool/src/cvscopy/cvsCopy.cxx
@@ -285,6 +285,10 @@ verify_file(const Filename &, const Filename &,
 ////////////////////////////////////////////////////////////////////
 bool CVSCopy::
 verify_binary_file(Filename source, Filename dest) {
+  if (source == dest) {
+    return true;
+  }
+
   source.set_binary();
   dest.set_binary();
 
@@ -335,6 +339,10 @@ verify_binary_file(Filename source, Filename dest) {
 ////////////////////////////////////////////////////////////////////
 bool CVSCopy::
 copy_binary_file(Filename source, Filename dest) {
+  if (source == dest) {
+    return true;
+  }
+
   source.set_binary();
   dest.set_binary();