True for perls that don't call 'len' magic when taking the C<length> of a magical scalar.
+=head2 C<VMG_COMPAT_GLOB_GET>
+
+True for perls that call 'get' magic for operations on globs.
+
=head2 C<VMG_PERL_PATCHLEVEL>
The perl patchlevel this module was built with, or C<0> for non-debugging perls.
qw/VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID/,
qw/VMG_COMPAT_ARRAY_UNDEF_CLEAR/,
qw/VMG_COMPAT_SCALAR_LENGTH_NOLEN/,
+ qw/VMG_COMPAT_GLOB_GET/,
qw/VMG_PERL_PATCHLEVEL/,
qw/VMG_THREADSAFE VMG_FORKSAFE/,
qw/VMG_OP_INFO_NAME VMG_OP_INFO_OBJECT/