Found the following significant warnings:
  ./vroom_big_int.h:60:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  ./vroom_chr.h:42:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  ./vroom_dttm.h:69:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  ./vroom_date.h:51:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  ./vroom_dbl.h:41:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  ./vroom_fct.h:126:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  ./vroom_int.h:39:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  ./vroom_num.h:51:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  ./vroom_time.h:51:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/progress/include/RProgress.h:229:11: warning: format string is not a string literal (potentially insecure) [-Wformat-security]
  /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/progress/include/RProgress.h:231:10: warning: format string is not a string literal (potentially insecure) [-Wformat-security]
  /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/progress/include/RProgress.h:272:16: warning: format string is not a string literal (potentially insecure) [-Wformat-security]
  /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/progress/include/RProgress.h:274:15: warning: format string is not a string literal (potentially insecure) [-Wformat-security]
  ./vroom_rle.h:44:9: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  vroom_write.cc:272:16: warning: field precision should have type 'int', but argument has type 'size_type' (aka 'unsigned long') [-Wformat]
See ‘/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/vroom.Rcheck/00install.out’ for details.
* used C compiler: ‘Debian clang version 17.0.5 (1)’
* used C++ compiler: ‘Debian clang version 17.0.5 (1)’