Gratuitous handwaving here since it's been ages since I mucked with XS, but . . .

I want to say that the keys to an HV are always stringified and kept as char*, not as SV*s. A good starting place might be to look at what Tie::RefHash does and then implement something similar in your XS (possibly something like keeping your own internal mapping of char* to original SV*).

In reply to Re: Using SV as key in hash by Fletch
in thread Using SV as key in hash by liz

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