It does something when SvROK(ST(2)) is true on entry, but it looks like a bug. (It's replacing a reference to the buf with the buf itself as a I read it.)

Update: More precisely, it's changing the contents of the scalar passed to the function from a reference to a string containing a copy of the buf. It does so for the sole purpose of calling SvSETMAGIC on the wrong variable.

In reply to Re: Perl XS - is this code required in DBD::Pg? by ikegami
in thread Perl XS - is this code required in DBD::Pg? by mje

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