[fpc-devel] Compiler bug in macro handling?

[Bernd Oppolzer]

No,

if you put a semicolon in there, you will get wrong syntax,
no matter what the datatype is.

Example:

{$MACRO ON}
{$define Fifteen:=15;}
{$define Twelve:=12;}
.......
      if HDCOUNT0 >= COUNT0 then X := Fifteen
       else X := Twelve;

will generate this Pascal statement:

      if HDCOUNT0 >= COUNT0 then X := 15;
       else X := 12;

and the semicolon before the else is wrong in Pascal syntax.

Remember: $define (macro processing) is stupid text replacement ...

HTH,

Bernd



Am 12.04.2017 um 20:11 schrieb Giuliano Colla:
> Il 12/04/2017 19:51, Michael Van Canneyt ha scritto:
>> Try removing the semicolon:
>> {$define Positiva:=False}
>> {$define Negativa:=True}
>
> Without semicolon it works!
>
> Thanks a lot.
>
> BTW, do you think that this holds true only for the define of boolean 
> values?
>
>
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