Re: [fpc-devel] Windows 32bit - FPC 3.0.4 Gets an Error - but not on Linux or Mac...
On 28/09/2019 23:52, Ozz Nixon wrote: It's a CDECL thing... :-( Disabled Using_CDECL, and now the pointer passes to/from the imported functions. (Florian/Jonas/Michael - is this an expected issue on Windows?) [clip] By default, Windows uses stdcall calling convention when calling externally defined subroutines in dynamic link libraries. It depends also if the dynamic link library uses stdcall calling convention, too. Other platforms uses cdecl (unix/linux et al). In your case it may be pascal default one calling convetion. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
Re: [fpc-devel] Windows 32bit - FPC 3.0.4 Gets an Error - but not on Linux or Mac...
I agree - but it is over 2 million lines of code. And disabling CDECL on the windows build of my compiler/interpreter, fixed the issue. Now, my only problem is when I run the compiler with no parameter it returns back to C:> with a trailing letter. If I trace in FPC.EXE, it does not produce this stray C:>d prompt with a Halt(0). On Sat, Sep 28, 2019 at 6:35 PM Sven Barth via fpc-devel < fpc-devel@lists.freepascal.org> wrote: > Ozz Nixon schrieb am Sa., 28. Sep. 2019, 22:53: > >> It's a CDECL thing... :-( >> >> Disabled Using_CDECL, and now the pointer passes to/from the imported >> functions. (Florian/Jonas/Michael - is this an expected issue on Windows?) >> > > It would help if you'd provide a self contained example that demonstrates > the problem. > > Regards, > Sven > >> ___ > fpc-devel maillist - fpc-devel@lists.freepascal.org > https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel > ___ fpc-devel maillist - fpc-devel@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
Re: [fpc-devel] Windows 32bit - FPC 3.0.4 Gets an Error - but not on Linux or Mac...
Ozz Nixon schrieb am Sa., 28. Sep. 2019, 22:53: > It's a CDECL thing... :-( > > Disabled Using_CDECL, and now the pointer passes to/from the imported > functions. (Florian/Jonas/Michael - is this an expected issue on Windows?) > It would help if you'd provide a self contained example that demonstrates the problem. Regards, Sven > ___ fpc-devel maillist - fpc-devel@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
Re: [fpc-devel] Windows 32bit - FPC 3.0.4 Gets an Error - but not on Linux or Mac...
It's a CDECL thing... :-(
Disabled Using_CDECL, and now the pointer passes to/from the imported
functions. (Florian/Jonas/Michael - is this an expected issue on Windows?)
On Sat, Sep 28, 2019 at 3:24 PM Ozz Nixon wrote:
> Alexander, Its the calling line that is messing up.
>
> TLapeImportedFunc(Ptr)(@Stack[StackPos - ParamSize], Res);
>
> * Res has a value before executing that line. However, the called method
> receives the 2nd param as null.
>
> Or is it in the definition:
> TLapeImportedFunc = procedure(const Params: PParamArray; const Result:
> Pointer); {$IFDEF Using_CDECL}cdecl;{$ENDIF} <-- CDECL is enabled.
>
> So, is a CDECL thing? A compile switch I need to enable/disable? Remove
> "const" everywhere? ... it has taken me 6 months to slow down and say, WTF.
> I can run everywhere but Windows. :-(
>
> On Sat, Sep 28, 2019 at 3:16 PM Alexander Grotewohl
> wrote:
>
>> don't know off the top of my head but does the ord() bit segfault without
>> assigning it to anything? like if the function only had writleln(ord())! or
>> does the result:= section segfault using ord() without the pointers?
>>
>> my guess is it works on linux/mac purely by luck. but i could be wrong.
>>
>> --
>> Alexander Grotewohl
>> http://dcclost.com
>>
>> On Sep 28, 2019 3:21 PM, Ozz Nixon wrote:
>>
>> [image: image.png]
>>
>> When I evaluate the code - it is perfect. However, when I run the code,
>> it raises a SIGSEGV - Segmentation fault. Yet, the code runs perfectly on
>> Linux 64bit machine, and Mac 32bit.
>>
>>
>> ___
>> fpc-devel maillist - fpc-devel@lists.freepascal.org
>> https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
>>
>
___
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Re: [fpc-devel] Windows 32bit - FPC 3.0.4 Gets an Error - but not on Linux or Mac...
Alexander, Its the calling line that is messing up.
TLapeImportedFunc(Ptr)(@Stack[StackPos - ParamSize], Res);
* Res has a value before executing that line. However, the called method
receives the 2nd param as null.
Or is it in the definition:
TLapeImportedFunc = procedure(const Params: PParamArray; const Result:
Pointer); {$IFDEF Using_CDECL}cdecl;{$ENDIF} <-- CDECL is enabled.
So, is a CDECL thing? A compile switch I need to enable/disable? Remove
"const" everywhere? ... it has taken me 6 months to slow down and say, WTF.
I can run everywhere but Windows. :-(
On Sat, Sep 28, 2019 at 3:16 PM Alexander Grotewohl
wrote:
> don't know off the top of my head but does the ord() bit segfault without
> assigning it to anything? like if the function only had writleln(ord())! or
> does the result:= section segfault using ord() without the pointers?
>
> my guess is it works on linux/mac purely by luck. but i could be wrong.
>
> --
> Alexander Grotewohl
> http://dcclost.com
>
> On Sep 28, 2019 3:21 PM, Ozz Nixon wrote:
>
> [image: image.png]
>
> When I evaluate the code - it is perfect. However, when I run the code, it
> raises a SIGSEGV - Segmentation fault. Yet, the code runs perfectly on
> Linux 64bit machine, and Mac 32bit.
>
>
> ___
> fpc-devel maillist - fpc-devel@lists.freepascal.org
> https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
>
___
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Re: [fpc-devel] Windows 32bit - FPC 3.0.4 Gets an Error - but not on Linux or Mac...
This is 2 decade of development (and for 19 years worked flawlessly) - and in the last 6 months, the windows build is broken. Not sure if it is a 3.0.4 FPC issue, or, a change in the 3.x builds - that I am unaware of. On Sat, Sep 28, 2019 at 3:19 PM Alexander Grotewohl wrote: > or maybe don't use the variable name "result" because it might point to > the special delphi "result" var and not yours? > > -- > Alexander Grotewohl > http://dcclost.com > > On Sep 28, 2019 4:15 PM, Alexander Grotewohl wrote: > > don't know off the top of my head but does the ord() bit segfault without > assigning it to anything? like if the function only had writleln(ord())! or > does the result:= section segfault using ord() without the pointers? > > my guess is it works on linux/mac purely by luck. but i could be wrong. > > -- > Alexander Grotewohl > http://dcclost.com > > On Sep 28, 2019 3:21 PM, Ozz Nixon wrote: > > [image: image.png] > > When I evaluate the code - it is perfect. However, when I run the code, it > raises a SIGSEGV - Segmentation fault. Yet, the code runs perfectly on > Linux 64bit machine, and Mac 32bit. > > > > ___ > fpc-devel maillist - fpc-devel@lists.freepascal.org > https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel > ___ fpc-devel maillist - fpc-devel@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
Re: [fpc-devel] Windows 32bit - FPC 3.0.4 Gets an Error - but not on Linux or Mac...
or maybe don't use the variable name "result" because it might point to the special delphi "result" var and not yours?--Alexander Grotewohlhttp://dcclost.comOn Sep 28, 2019 4:15 PM, Alexander Grotewohl wrote:don't know off the top of my head but does the ord() bit segfault without assigning it to anything? like if the function only had writleln(ord())! or does the result:= section segfault using ord() without the pointers?my guess is it works on linux/mac purely by luck. but i could be wrong.--Alexander Grotewohlhttp://dcclost.comOn Sep 28, 2019 3:21 PM, Ozz Nixon wrote:When I evaluate the code - it is perfect. However, when I run the code, it raises a SIGSEGV - Segmentation fault. Yet, the code runs perfectly on Linux 64bit machine, and Mac 32bit. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
Re: [fpc-devel] Windows 32bit - FPC 3.0.4 Gets an Error - but not on Linux or Mac...
don't know off the top of my head but does the ord() bit segfault without assigning it to anything? like if the function only had writleln(ord())! or does the result:= section segfault using ord() without the pointers?my guess is it works on linux/mac purely by luck. but i could be wrong.--Alexander Grotewohlhttp://dcclost.comOn Sep 28, 2019 3:21 PM, Ozz Nixon wrote:When I evaluate the code - it is perfect. However, when I run the code, it raises a SIGSEGV - Segmentation fault. Yet, the code runs perfectly on Linux 64bit machine, and Mac 32bit. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
Re: [fpc-devel] Windows 32bit - FPC 3.0.4 Gets an Error - but not on Linux or Mac...
[image: image.png] Okay, getting better at FPC.EXE debugging... it appears, that 3.0.4 (or Windows) passing a Const Pointer is handled differently? * The bottom grey line - shows RES = xD9020, however, the LapeOrdChar(show's it's 2nd parameter as 0x0 instead of xD9020). I was originally focusing on Params^[0] - but that is not the error - Result:Pointer is wrong address - even though the calling convention passed in the correct address. ** Again, this is only broken on my Windows compile. I use 2.6.4 on Linux 64bit, and 3.0.4 on Mac (which works) and on Windows. Same compile options (I compile via CLI). O. On Sat, Sep 28, 2019 at 2:21 PM Ozz Nixon wrote: > [image: image.png] > > When I evaluate the code - it is perfect. However, when I run the code, it > raises a SIGSEGV - Segmentation fault. Yet, the code runs perfectly on > Linux 64bit machine, and Mac 32bit. > ___ fpc-devel maillist - fpc-devel@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
