Martin Friebe pisze:
What about a long running (eg daemon) application?
If temp/tail hits the upper boundary of Integer?
(If I understand it correctly)
I don't know if interlockedIncrement gives a boundary error, but if not,
it still fails.
- With currently integer, it gets a negative value, once crossing
0x7fffffff, and SetObject will attempt to read/write out-of-bounds
memory.
- Assuming temp/tail being unsigned: it will go from 0xffffffff to 0.
"0xffffffff mod fsize" may return a value greater 0, "0x00 mod fsize"
will be zero. You make an unexpected jump within the list.
Thats right.
But I can avoid this.
1. make length of tab equal power of two
2. use longword instead of integer
3.instead MOD use result:=tab[lp and fmask];
and fmask:=$F or $FF or $FFF
Thanks to find bug.
Darek
_______________________________________________
fpc-devel maillist - fpc-devel@lists.freepascal.org
http://lists.freepascal.org/mailman/listinfo/fpc-devel
