ko1 / atdot.net wrote:
> (1) can be incompatibility issue so that I don't propose this fix strongly.
> Interpreter core doesn't depends on this spec, but C-exts can be affected.

I think the only thing I've seen C-exts depend on is Qfalse == 0
(which this preserves)

> Strange thing is: vm1_const

I suspect this is CPU-specific behaviors.  I cannot see the difference
on my AMD FX-8320 (on vm1_const, haven't tested others)