message: Avoid bogus return
diff: @@ -144,12 +144,11 @@ Rboolean RelToAltrep::RelInspect(SEXP x, int pre, int deep, int pvec, void (*ins
  }
  // this allows us to set row names on a data frame with an int argument without calling INTPTR on it
  -static SEXP install_new_attrib(SEXP vec, SEXP name, SEXP val) {
  +static void install_new_attrib(SEXP vec, SEXP name, SEXP val) {
  SEXP attrib_vec = ATTRIB(vec);
  SEXP attrib_cell = Rf_cons(val, R_NilValue);
  SET_TAG(attrib_cell, name);
  SETCDR(attrib_vec, attrib_cell);
  - return val;
  }
  R_xlen_t RelToAltrep::RownamesLength(SEXP x) {
  