[fpc-devel] ref count issue with out param

[Florian Klämpfl]

Am 13.06.2015 um 14:27 schrieb Martin Frb:
> On 13/06/2015 09:31, Florian Klämpfl wrote:
>> It is similar to
>>
>> type
>>    tarray = array [1..10] of longint;
>>
>> procedure p(const a1 : tarray;var a2 : tarray);
>>    begin
>>      a2[1]:=4321;
>>      writeln(a1[1]);  // surprise
>>    end;
>>
>> var
>>    arr : tarray;
>>
>> begin
>>    arr[1]:=1234;
>>    p(arr,arr);
>> end.
>>
> 
> I dont see any similarity. You pass 2 pointers to the same memory. No surprise for me. But also no
> broken ref counting.

Well, similar in the meta sense: passing the same data location with a different modifier.