Package fixest version 0.13.2
Package built using 88872/R 4.6.0; x86_64-pc-linux-gnu; 2025-09-27 05:20:27 UTC; unix   
Checked with rchk version 35618ebbccf3cd0b45a3530e6303970a22a9056b LLVM version 14.0.6
More information at https://github.com/kalibera/cran-checks/blob/master/rchk/PROTECT.md
For rchk in docker image see https://github.com/kalibera/rchk/blob/master/doc/DOCKER.md

Function indexthis::IndexInputVector::initialize(SEXPREC* const&)
  [PB] has possible protection stack imbalance fixest/src/to_index.cpp:169