Package mgcv version 1.8-33
Package built using 79387/R 4.1.0; x86_64-pc-linux-gnu; 2020-10-31 04:35:32 UTC; unix   
Checked with rchk version 1df3a0cc105e4278d3a4b8e1215f64bf6611d1e8 LLVM version 10.0.1
More information at https://github.com/kalibera/cran-checks/blob/master/rchk/PROTECT.md

Suspicious call (two or more unprotected arguments) to SET_STRING_ELT at sXWXd mgcv/src/sparse.c:962

Function sXWXd
  [UP] calling allocating function R_do_new_object with argument allocated using R_getClassDef mgcv/src/sparse.c:961
  [UP] calling allocating function R_do_new_object with argument allocated using R_getClassDef mgcv/src/sparse.c:963

Function stmm
  [UP] calling allocating function R_do_new_object with argument allocated using R_getClassDef mgcv/src/sparse.c:1786