OPTLINK (R) for Win32 Release 8.00.13 Copyright (C) Digital Mars 1989-2010 All rights reserved. http://www.digitalmars.com/ctg/optlink.html Debug\Foo.obj Offset 00000H Record Type 0064 Error 138: Module or Dictionary corrupt Building Debug\Foo.exe failed! That's what I get when I compile with-m64. What is wrong?