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author	Tom Lane <tgl@sss.pgh.pa.us>
	Sun, 4 Aug 2019 18:05:34 +0000 (14:05 -0400)
committer	Tom Lane <tgl@sss.pgh.pa.us>
	Sun, 4 Aug 2019 18:05:34 +0000 (14:05 -0400)
commit	e0f5048851ff88a53630a0c121a1cd15f6a2f1cd
tree	c0737bb205b2b080b69a23068b9dffa70b98a76b	tree
parent	803466b6ffaa2e5b94d8ce4d7fffa8185f2a0184	commit \| diff

Fix handling of "undef" in contrib/jsonb_plperl.

Perl has multiple internal representations of "undef", and just
testing for SvTYPE(x) == SVt_NULL doesn't recognize all of them,
leading to "cannot transform this Perl type to jsonb" errors.
Use the approved test SvOK() instead.

Report and patch by Ivan Panchenko. Back-patch to v11 where
this module was added.

Discussion: https://postgr.es/m/1564783533.324795401@f193.i.mail.ru

Andres' PG stuff

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contrib/jsonb_plperl/expected/jsonb_plperl.out		diff \| blob \| blame \| history
contrib/jsonb_plperl/expected/jsonb_plperlu.out		diff \| blob \| blame \| history
contrib/jsonb_plperl/jsonb_plperl.c		diff \| blob \| blame \| history
contrib/jsonb_plperl/sql/jsonb_plperl.sql		diff \| blob \| blame \| history
contrib/jsonb_plperl/sql/jsonb_plperlu.sql		diff \| blob \| blame \| history