diff -Naur bash-4.2-orig/general.c bash-4.2/general.c
--- bash-4.2-orig/general.c	2010-12-13 06:06:27.000000000 +1000
+++ bash-4.2/general.c	2013-08-25 21:52:36.681484302 +1000
@@ -766,7 +766,7 @@
   *nbeg++ = '.';
 
   nlen = nend - ntail;
-  memcpy (nbeg, ntail, nlen);
+  memmove (nbeg, ntail, nlen);
   nbeg[nlen] = '\0';
 
   return name;