[fpc-pascal] Ordinal casting to enums

[Ondrej Pokorny]

writeln() converts the ordinal value to the value name and if the entry 
is not found, the 107 error is raised.

Ondrej

On 06.06.2024 06:22, Hairy Pixels via fpc-pascal wrote:
> This program below crashes because the value 12 is not in the enum. I was curious though, how does it know this? Does it have to do a linear search through the enum to find the value? I know "succ" fails at compile time because the enum has assignments but how this works at runtime is another question.
>
> type
>    Fruit = (apple = 10,
>             banana,
>             pear = 20,
>             citrus);
> var
>    f: Fruit;
>    i: Integer;
> begin
>    i := 12;
>    f := Fruit(i);
>    writeln(f);
> end;
>
> Regards,
> 	Ryan Joseph
>
> _______________________________________________
> fpc-pascal maillist  -  fpc-pascal at lists.freepascal.org
> https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal