I'm trying to use stringify overload on a tied XS variable (Perl 5.6.0) and I can't figure out how to turn on 'fallback'.
I was able to find SvAMAGIC_on() to turn on overload, and I provide a stringify method ('""') that works when you do "$ref", but I need
$ref eq "some string"
to work also, and that means setting fallback => 1, which I can't figure out how to do to my XS-tied variable. My tie'ing sequence looks roughly like this:
HV *hash = newHV();
SV *hashref = newRV_noinc((SV*)hash);
SV *tie = newSViv((IV)value);
SV *tieref = newRV_noinc(tie);
hv_magic(hash, (GV *)tieref, 'P');
Devel::Peek isn't giving me a clue (afaics) as to what magic is different between my XS-tied var and a pure-Perl tied var with overload magic.
Any clues appreciated!