Undefined symbol ALTREP_SERIALIZED_STATE #6
Description
Apart from the method above, many other ALTREP methods are not exported yet on R-devel on linux.
This seems to be caused by a attribute_hidden definition in front of the function declaration in the R sources, see for example the non-exported ALTREP_INSPECT here.
Exported functions seem to have attribute_hidden commented out. Perhaps a post to r-devel@r-project.org will clarify the current state.