[fpc-devel] flaky Win64 support in FPC?

Florian Klaempfl florian at freepascal.org
Wed Oct 15 09:57:02 CEST 2008

Graeme Geldenhuys schrieb:
> Hi,
> Could anybody using 64bit FPC under Windows comment on this?  I'm only
> now able to setup 64bit FPC under Linux, but haven't had the
> opportunity to run 64bit Windows and FPC for that matter.  I thought
> 64bit support in FPC was done and dusted? [for Linux and Windows at
> least]

FPC Win64 works well, I don't know about serious bugs, I consider the
post as typical non-technical flame. If somebody has no clue how to
debug his code, he should better stop coding. Of course, it could be
that there is some bug in fpc win64 but it could be also a simple
pointer(<longint>)^ in his code. Without a usable bug report I can't
take such posters serious.

> -------- Original Message --------
> Subject: Re: 64-bit or multi-threading in D2010
> Date: Tue, 14 Oct 2008 19:47:30 -0700
> From: invar brass <>
> Newsgroups: embarcadero.public.delphi.non-technical
> References: <28983 at forums.codegear.com> <29136 at forums.codegear.com>
> 64bit is not only about accessing more than 4gb memory (which you can
> also do on a 32bit system... using the win32 AWE APIs).
> I for one desperately need a native 64bit pascal compiler. I can't use
> my ISAPIs on 64bit IIS7 (or even IIS6) for that matter. I can't use 64
> bit DLLs in my project. I can't do 64-bit shell stuffs with my delphi.
> In fact, ever since I had upgraded to a 64bit PC, I've been feeling a
> little crippled as a delphi developer.
> I know FPC has a win64 compiler. But it's not quite ready for
> primetime use. Just last month I had to cancel my Win64 VPS hosting
> after a frustrating struggle with FPC-Win64. FPC-64 compiler can do
> basic 64 bit stuffs, but anything more complicated and you'll have
> trouble. I was able to compile my IOCP-based server with FPC/64, but
> the app crashes soon after it starts. And I don't have the slightest
> idea where to start hunting for bugs. FPC does produce 64-bit apps,
> but it may not be the ideal solution fo
> r critical apps.
> -----------------------[ end ]--------------------------
> Regards,
>   - Graeme -
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