Microsoft Windows XP [version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Perl\Test\WEB\Mechanize>perl -e "sub { @_ = 3; fork ? die 5 : die 6
+ }->()"
6 at -e line 1.
5 at -e line 1.

Exception:
AppName: perl.exe     AppVer: 5.8.7.813     ModName: perl58.dll
ModVer: 5.8.7.813     Offset: 0003706e

C:\Perl\Test\WEB\Mechanize>perl -version

This is perl, v5.8.7 built for MSWin32-x86-multi-thread
(with 7 registered patches, see perl -V for more detail)
[download]

Best regards,
Allan