#define AVf_REUSED 4 /* got undeffed--don't turn old memory into SVs now */
/*
+=head1 Handy Values
+
=for apidoc AmU||Nullav
Null AV pointer.
+=head1 Array Manipulation Functions
+
=for apidoc Am|int|AvFILL|AV* av
Same as C<av_len()>. Deprecated, use C<av_len()> instead.