[fpc-pascal] Result: string

Howard Page-Clark hdpc at talktalk.net
Mon Mar 4 21:51:10 CET 2013


On 04/03/13 8:23, Juha Manninen wrote:
> On Mon, Mar 4, 2013 at 9:21 PM, José Mejuto <joshyfun at gmail.com> wrote:
>> What's the expected output of this code ?
>>
>> function TheA(): string;
>> begin
>>    Result:=Result+'A';
>> end;
>>
>> writeln(TheA());
>>
>> I thought that when the result type is an automated one its value gets
>> initialized... Maybe I'm wrong...
>
> Yes you are wrong. It is very illogical because a local string
> variable is initialized to be empty but the return value is not.
> Delphi has the same problem.
>
> I once made even a report about it:
>    http://bugs.freepascal.org/view.php?id=20907

That report says the issue was assigned to Jonas and fixed in revision 
20427 (ver 2.6.1).
I find the current release (2.6.2) initialises a string function result 
to EmptyStr as you would hope.





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