# HG changeset patch
# User Frank Benoit <benoit@tionex.de>
# Date 1211228413 -7200
# Node ID da992144273f78985f1dace1dec3b6e6dc7b3375
# Parent  f08216d53777327fbad2e3d3bb39f85e3bc45e6a
Fix bug in System.arraycopy when called for overlapping array ranges

diff -r f08216d53777 -r da992144273f dwt/dwthelper/System.d
--- a/dwt/dwthelper/System.d	Mon May 19 17:08:39 2008 +0200
+++ b/dwt/dwthelper/System.d	Mon May 19 22:20:13 2008 +0200
@@ -80,8 +80,15 @@
         debug{validCheck(src.length - srcPos, dest.length - destPos, len);}
 
         if(src is dest){
-            for(int i=0; i<len; ++i){
-                dest[destPos+i] = src[srcPos+i];
+            if( destPos < srcPos ){
+                for(int i=0; i<len; ++i){
+                    dest[destPos+i] = src[srcPos+i];
+                }
+            }
+            else{
+                for(int i=len-1; i>=0; --i){
+                    dest[destPos+i] = src[srcPos+i];
+                }
             }
         }else{
             dest[destPos..(len+destPos)] = src[srcPos..(len+srcPos)];