Possible @property compromise

[Zach the Mystic]

On Friday, 1 February 2013 at 02:27:30 UTC, TommiT wrote:
> And here's another example of why it is as big of a problem as 
> I make it sound to be:
>
> import std.concurrency;
>
> struct Array
> {
>     int _len;
>
>     length struct // Using Zach's syntax
>     {
>         @property get() { return _len; }
>         alias this = get;
>         void opAssign(int rhs) { _len = rhs; }
>     }
> }
>
> void func(T)(T t)
> {
>     auto v = t;
>     v = 10;
> }
>
> void main()
> {
>     Array arr;
>     spawn(&func!int, arr.length);
>     arr.length = 20; // And here we have a data-race.
>                      // Good luck trying to find these
>                      // kinds of bugs.
> }

I'm sorry, I know very little about race conditions. If you might 
explain just a little bit about what is happening here, I'd be in 
a better position to understand what you're saying. I really 
can't say anything other than please describe what this does and 
why it's a problem at this time.