[fpc-devel] Armel problems

Den Jean Den.Jean at telenet.be
Tue May 18 18:51:33 CEST 2010

On Monday 17 May 2010 22:22:13 Den Jean wrote:
> Hi,
> I am investigating why Qt on armel has problems.
> I think that one of the problems is
> that when c-functions are called from
> pascal that the parameters are not passed
> correctly (or not as I expected and accommodated for).
On Tuesday 18 May 2010 10:17:27 Michael Schnell wrote:
> Does the compiler digest this ?
> Up till now I thought it's impossible to use any common object ABI
> between Pascal and C++, so that any C function needs to be called by
> Pascal using a "flattened" non-Object based interface, because the
> Pascal and C++ object models are too different to use common objects
> with both languages.

Note how I say c-functions and not c++ functions. Only a C ABI
is guaranteed, this is why all languages can interface with C
but not with C++ or Java. I lack detailed knowledge of that ABI
so the FPC devels may have to correct me on how that method
struct will be passed, but I guess it should be by value. The 
alignment is probably not an issue with 2 struct members with the
size of a pointer.


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