[fpc-devel] c-blocks (darwin aarch64)

[Jonas Maebe]

Dmitry Boyarintsev wrote:

> Regarding the fix on 30022. I'd think the behavior is Delphi compatible,
> where it would also complain passing a function (block) with address
> operator.

Delphi does not support assigning procedures to variables representing 
anonymous functions, so I doubt they would allow it for C-blocks.

> It's just a bit surprising, since it's inconsistent with regular
> procedure type variables.

It's the same as with procedure of object, also in Delphi. The fact that 
Type X (pointer) can be automatically converted to Type Y (procvar), 
does not mean that Type X can also be automatically converted to type Z 
(C-block).

In fact, it is plain bad to let (data) pointers be automatically 
converted into procvars and vice versa, because on some platforms (such 
as PowerPC64 ELFv1, and also MS-DOS in most memory models) they are 
quite different. We "solve" this by also returning a procvar for 
@procname on such platforms (or by introducing multiple pointer types 
like for MS-DOS), but that in turn requires workarounds like in r20820.


Jonas