Possible bug in boxing unit?

[jcc7]

In article <e4fisl$43r$1 at digitaldaemon.com>, akcom says...
>
>H:\workspace\server>dmd -unittest -v main.d settings.d
>parse     main
>parse     settings
>semantic  main
>semantic  settings
>semantic2 main
>semantic2 settings
>semantic3 main
>semantic3 settings
>code      main
>generating code for function 'main'
>code      settings
>generating code for function 'this'
>generating code for function 'this'
>generating code for function '_dtor'
>generating code for function 'set'
>generating code for function 'unset'
>generating code for function 'get'
>generating code for function 'isSet'
>generating code for function 'keyList'
>generating code for function '__unittest0'
>generating code for function 'unboxable'
>generating code for function 'unboxCastInteger'
>E:\dmd\bin\..\..\dm\bin\link.exe main+settings,,,user32+kernel32/noi;
>OPTLINK (R) for Win32  Release 7.50B1
>Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
>
>settings.obj(settings)
>  Error 42: Symbol Undefined _assert_3std5boxer
>--- errorlevel 1

Looks you've stumbled upon std.boxer's "Release Mode Bug".
http://www.prowiki.org/wiki4d/wiki.cgi?DocComments/Phobos/StdBoxer

It's already in BugZilla, too:
http://d.puremagic.com/bugzilla/show_bug.cgi?id=8

jcc7