Feasibility of having an SvPV point to a compiled C string

I don't know anything about this area of the Perl core.  How feasible 
would it be to have an API that creates an SVpv with its initial 
(possibly only) value pointing to a constant C string, without copying 
the string?

The issue comes up in converting regexes to use inversion lists for 
Unicode and POSIX properties.  The commonest of these could be compiled 
into a hdr file, but some of them are thousands of bytes long.  It seems 
silly to have these read-only arrays copied elsewhere.

• Feasibility of having an SvPV point to a compiled C string by Karl Williamson
• Re: Feasibility of having an SvPV point to a compiled C string by Zefram
• Re: Feasibility of having an SvPV point to a compiled C string by Father Chrysostomos