From 223ef9d742fe9813d564b4722d69a02607174f3e Mon Sep 17 00:00:00 2001
From: Ivan Bessonov <ivan.bessonov@jetbrains.com>
Date: Fri, 8 Apr 2016 14:08:29 +0300
Subject: [PATCH] Fix of bug in FileUtil - do not empty the file if one tries
 to copy it into itself.

---
 platform/util/src/com/intellij/openapi/util/io/FileUtil.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/platform/util/src/com/intellij/openapi/util/io/FileUtil.java b/platform/util/src/com/intellij/openapi/util/io/FileUtil.java
index 710e80a830f3..a17feb37587e 100644
--- a/platform/util/src/com/intellij/openapi/util/io/FileUtil.java
+++ b/platform/util/src/com/intellij/openapi/util/io/FileUtil.java
@@ -459,6 +459,7 @@ public class FileUtil extends FileUtilRt {
 
   @SuppressWarnings("Duplicates")
   private static void performCopy(@NotNull File fromFile, @NotNull File toFile, final boolean syncTimestamp) throws IOException {
+    if (filesEqual(fromFile, toFile)) return;
     final FileOutputStream fos;
     try {
       fos = openOutputStream(toFile);