[fpc-pascal] fpc has trouble with array types

[Vincent Snijders]

2011/10/18 Sven Barth <pascaldragon at googlemail.com>:
> Am 18.10.2011 11:12, schrieb Sven Barth:
>>
>> type
>> TByteArray = array of Byte;
>>
>> function XlatPrime(): TByteArray;
>> begin
>> XlatPrime := TByteArray.Create(
>> $64, $73, $66, $64, $3b, $6b, $66, $6f,
>> $41, $2c, $2e, $69, $79, $65, $77, $72,
>> $6b, $6c, $64, $4a, $4b, $44, $48, $53,
>> $55, $42, $73, $67, $76, $63, $61, $36,
>> $39, $38, $33, $34, $6e, $63, $78, $76,
>> $39, $38, $37, $33, $32, $35, $34, $6b,
>> $3b, $66, $67, $38, $37
>> );
>> end;
>
> Before I forget it: If you use this solution (not the const one) or you use
> "SetLength", you need to free the array using "SetLength(0)" or
> "YourArrayVariable := Nil", otherwise you'll have a memory leak. You must
> not do this if you use the const solution.

That is unexpected. Until now, SetLength was used for ansistrings and
dynamic arrays, which didn't have this requirement (unless you messed
with the internals using Move).

Vincent