Re: Incompatibility of lua5.1.dll (from Lua Binaries) and Delphi

[Shmuel Zeigerman <shmuz@...>]

Ignacio Burgueño wrote:
> I haven't been able reproduce the bug here with free bcc compiler (5.0 I 
> guess). I can't link to VCL since it's not included. So I tested two 
> dlls, one with Borland's C runtime statically linked and another with 
> the runtime linked from a dll. They both worked.

I also could not create a segfault without VCL.

>  > What's interesting, segfaults occur only when a number assigned to 
> 'var' is >= 0x80000000.
>
> Maybe Borland is setting something and the above code triggers it? I'm 
> thinking of something similar to the floating point issues caused by 
> DirectX setting a FP flag making Lua lose precision. (not that it's the 
> same issue here, merely that it might be something along those lines).

Yes, this seems to be something to do with floating point. Unfortunately 
I have no knowledge in these matters.

Also, my app (LuaFAR for Editor) does not use Borland at all. It is a 
dll plugin to some application (far.exe). But it is sufficient that a 
user has another plugin that is written in Delphi, and my plugin, via 
lua5.1.dll, triggers a segfault. Since I have no influence on what 
plugins users install, I can only hope that LuaBinaries fix that issue.

--
Shmuel