Naturally the interpolation causes the IV to become an PVIV.

That causes a write to the memory page, causing it to become unshared, ...

I am not quite sure why it is said above that type coercion is going to cause a problem here.

...thus type coercion causes a problem.

In reply to Re^2: Reliability of SvREADONLY by ikegami
in thread Reliability of SvREADONLY by hardburn

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