[Mono-devel-list] Zero Length Arrays

[Jeroen Frijters]

Ben Maurer wrote:
> So, today, I realized that there is a VERY simple solution. In
> mono_array_new, if it finds that it will be creating a zero length
> array, it should used a cached zero length array.

ECMA says:
"The newarr instruction pushes a reference to a *new* zero-based,
one-dimensional array" (my emphasis).

This optimization is not allowed. Plain and simple.

Piers Haken wrote:
> What about locking?

This is why the optimization isn't legal. The following pattern is
should work:

object myLock = new object[0];
lock(myLock)
{
}

Regards,
Jeroen