In XS:

Given an address in memory, is it possible to reconstruct an RV if you know exactly what it looks like (but none of the values)? The particular case that I am most interested in is a very simple reference to a reference, like so: 

SV = RV(0x1f6394) at 0x31d968
  REFCNT = 2
  FLAGS = (ROK)
  RV = 0x2dfea0

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The routine that will be reconstructing the RV will not know the values of the RV's (i.e., 0x1f6394 and 0x2dfea0 in the above example). Unfortunately, the pointer (say, ptr=0x31d968) is typecast to (char *), so if I simply look at sv_dump(*(SV **)ptr), I get something like: 
SV = UNKNOWN(0x31) (0x0) at 0x31d968
  REFCNT = 0
  FLAGS = ()

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Am I asking for the moon? I looked at perlapi and perlguts but couldn't quite figure it out. Apparently I don't know enough C tricks to pull this off. So, help me! Any help is appreciated.

In reply to Reconstructing an (SV *) when you know the address and the precise structure of the said SV by asarih

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