[fpc-devel] calling convention on mac

[Jonas Maebe]

On 28 Nov 2012, at 22:23, Carlo Kok wrote:

> The constructor call abi was changed twice (1 or 2 years ago), the  
> last change undid the first.

I don't remember that one. Was that across released FPC versions?

> That said, yes, you are right, bugs should be fixed. I'd just like  
> to be able to say "it works with all these versions", instead of  
> specific ones.

Well, depending on machine level compiler-implementation detail is the  
ideal recipe for trouble, no matter how useful the result may be. And  
while normally calling convention-related stuff would almost never  
change because it would break all interfacing with dynamic libraries  
compiled by previous FPC versions, in practice such FPC-compiled  
libraries are (fortunately) not in widespread distribution or use and  
hence we can still fix such bugs.

External review or rigorous testing of the calling convention code in  
all possible scenarios could also help with getting everything fixed  
in one release, instead of piecemeal one change at a time.


Jonas
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