I've been upgrading to a Windows 64 bit box. Running the D test suite, I ran into a very strange problem. Here's the program:

---------------------------
 extern(C) int printf(const char*, ...);

 int main()
 {
     byte[3] a;
     byte[3] b;
     byte[3] c;

     a[] = b[] + c[];

     printf("Success\n");
     return 0;
 }
---------------------------

I run it from a cc.bat file that has the contents:

--------------------------
 ..\dmd test
 test
 ..\dmd test
--------------------------

and the result is:
--------------------------
 C:\test>..\dmd test

 C:\test>test
 Success

 C:\test>..\dmd test
 GetLastError = 32 test.exe
 OPTLINK (R) for Win32  Release 8.00.12
 Copyright (C) Digital Mars 1989-2010  All rights reserved.
 http://www.digitalmars.com/ctg/optlink.html
 OPTLINK : Error 3: Cannot Create File test.exe
 --- errorlevel 1
---------------------------

Note the failure to write out test.exe. I instrumented Optlink to figure out why, and the CreateFile() returns error 32, which is "The process cannot access the file because it is being used by another process." If you run the commands by typing them in (not via a .bat file) it works. If the array
operations are removed, it works. It works on Windows XP.

I'm mystified. Does anyone have any ideas?

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