Closed yutannihilation closed 2 months ago
https://github.com/r-devel/r-svn/commit/d499fab95b1ba23ee7842293030d4af1e69ae0fe
DATAPTR_RO is also fine to use.
DATAPTR_RO
https://github.com/r-devel/r-svn/commit/d499fab95b1ba23ee7842293030d4af1e69ae0fe