Error interpretation / Pop3Client

[Frits van Bommel]

Dié wrote:
> Hello!
> I'm using dCode IDE for compiling the Exemple in Pop3Client.d (Tango...Sources... trunk/patches/proposals).
> 
> I have this error:
> 
> OPTLINK (R) for Win32  Release 7.50B1
> Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
> 
> poptest.obj(poptest)
>  Error 42: Symbol Undefined _D5tango3net4pop310Pop3Client14POP3Connection7__ClassZ
> poptest.obj(poptest)
>  Error 42: Symbol Undefined _D5tango3net4pop310Pop3Client14POP3Connection5_ctorMFAaAaAaiZC5tango3net4pop310Pop3Client14POP3Connection
> --- errorlevel 2
> 
> but i dont understant why POPConnection provocate this error.
> 
> Before this, my question is: how can i understand this error string "_D5tango3net4pop310Pop3Client14POP3Connection7__ClassZ" for example.
> I think "tango...net...pop3..." rapresent the hierarchy folders, but "_D.....3......4......14......7__ClassZ"???????

It's the mangled version of 
"tango.net.pop3.Pop3Client.POP3Connection.__Class". In other words, the 
ClassInfo data[1] for the class POP3Connection in module 
tango.net.pop3.Pop3Client.
(Phobos' std/demangle.d contains an example on how to use it to 
automatically demangle such names)

The other string means class "tango.net.pop3.Pop3Client.POP3Connection 
tango.net.pop3.Pop3Client.POP3Connection._ctor(char[], char[], char[], 
int, <this-ptr>)", i.e. the constructor taking three char[]s and an int 
(and an implicit this pointer) for that same class.

Are you sure you compiled and linked the tango.net.pop3.Pop3Client module?
(A note for others who couldn't find that module: the Pop3Client module 
seems to only be available under trunk/patches/proposals in the SVN 
repository)

If the above doesn't help:
What version of Tango are you using and what version of DMD?
AFAIK Tango hasn't yet been updated for DMD v1.010. I'm not sure if it 
needs to be, but I haven't tried it either.


[1]: a class defined in object.d[i]