* reference it in another place and av_push
- * This is a variation of SvREFCNT_inc which has
- * some limitations that don't matter here.
+ * SvREFCNT_inc_void_NN is a variation of SvREFCNT_inc
+ * which has some limitations that don't matter here.
* From the documentation (perldoc perlapi):
that sv is not NULL. The macro doesn't need to
return a meaningful value, or check for
NULLness, so it's smaller and faster.
+ * av_fetch cannot return a non-NULL SV** that points