In our previous episode, Dani?l Mantione said:
> Sets, are a bit more complicated: Their binary layout is defined in
> Borland documentation, but this one of the few issues were FPC didn't
> follow Borland. FPC has smallsets, up to 32 items and longsets, up to 256
> items.
That's outdated, running
{$packset 4}
type TBit64=0..63;
TBitSet64 = set of TBit64;
begin
writeln(sizeof(tbitset64));
end.
yields "8".
Last week I had to add this packset in addition to $Mode delphi to compile
delphi
code.
A difference with Delphi is that delphi iirc also allows multiple of 1s, and
fpc only allows 1,2,4.. (multiples of 4 bytes)..32.
IIRC that had to do with endianess of sets, keeping them (d)word addressable.
The 4 byte magnitude doesn't scale to 8 byte on 64-bit though.
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