[fpc-devel] BOOL

[Florian Klämpfl]

Am 14.12.2014 um 20:25 schrieb Michael Van Canneyt:
> 
> 
> On Sun, 14 Dec 2014, Florian Klämpfl wrote:
> 
>> Am 14.12.2014 um 18:05 schrieb Adriaan van Os:
>>>> IMHO using the for loop on a non pascal boolean type is simply wrong. At the
>>>> very least the assumption that the false and true are successive, and maybe
>>>> even using BOOL as loopvar in the first place.
>>>
>>> The compiler accepts it.
>>
>> Can somebody with access to delphi please check, if it compiles
>>
>> var
>>  b : bytebool;
>>
>> begin
>>  for b:=false to true do
>>    ;
>> end.
> 
> D7 and Delphi XE5 compile it but do not generate code, instead say:
> 'FOR or WHILE loop executes zero times - deleted
> variable b is declared but never used in ...

But it generates code for

var
  b : bytebool;
begin
 for b:=true to false do
   ;
end.

?

> 
> When declared as boolean, it does generate code.
> (as I would expect)
> 
> Michael.
> 
> 
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