[fpc-devel] Abs(Variant) unexpected result

[Michael Van Canneyt]

On Sun, 25 Feb 2018, Bart wrote:

> Hi,
>
> See: http://forum.lazarus.freepascal.org/index.php/topic,40223.msg277657/
>
> This seems rather unexpected.

Not really.

The abs() function is overloaded for different types.

The compiler does not know at compile time what type the variant is, 
how can you expect it to choose the "right" overloaded version ?

It probably takes the first fit for possible values in a Variant, 
which is most likely an integer version.

Don't use variants if you want type safety :)

Michael.