Cristian Peța

I don't understand what would be wrong to enable ARC for objects and to consider [unsafe] as default. It will not brake old code. And using [safe] or [arc] we can have automatic memory management. At least for simple scenarios.

I discovered this looking in FMX sources.

What if we would have [safe] attribute?

It would be very useful for local instances. 

We have [unsafe] attribute but not [safe]. In ARC all instances are implicitly [safe] and we need to explicitly mark with [unsafe] if we don't want ARC.

I call this implicit ARC.

But with [safe] we can have explicit ARC where all instances are implicit [unsafe].

var ms := TStringList.Create;
try
  ...
finally
  ms.Free;
end;

var [safe] ms := TStringList.Create;
...

Merged by Sherlock: Try to avoid double posts, please.