fourth I guess? ?Sized

extendr-api/src/robj/mod.rs

@@ -35,10 +35,10 @@ pub use operators::*;
 pub use rinternals::Rinternals;
 
 #[derive(Debug)]
-pub struct RobjRef<'a, T>(pub &'a T);
+pub struct RobjRef<'a, T: ?Sized>(pub &'a T);
 
 #[derive(Debug)]
-pub struct RobjMut<'a, T>(pub &'a mut T);
+pub struct RobjMut<'a, T: ?Sized>(pub &'a mut T);
 
 /// Wrapper for an R S-expression pointer (SEXP).
 ///
@@ -806,7 +806,7 @@ where
 ///
 /// [`SEXP`]: libR_sys::SEXP
 /// Marker for the R object modes / types represented as a value.
-trait SexpAsPtr: Sized {
+pub(crate) trait SexpAsPtr: Sized {
     /// See [`Rtype`] for reference.
     const R_TYPE_ID: u32;
     /// Corresponding rust type to the type in C (in R's C-API)