You may be aware that recently there was some discussion on the r-devel
mailing mailing list whether control statements with condition with
greater than one should give error (and not just a warning). This
behavior can now optionally be obtained in current development versions
of R by setting env var _R_CHECK_LENGTH_1CONDITION to something true.
Tomas Kalibera (cc) has run a full CRAN check with this setting, and put
the reports and some explanation on
You may be aware that recently there was some discussion on the r-devel mailing mailing list whether control statements with condition with greater than one should give error (and not just a warning). This behavior can now optionally be obtained in current development versions of R by setting env var _R_CHECK_LENGTH_1CONDITION to something true. Tomas Kalibera (cc) has run a full CRAN check with this setting, and put the reports and some explanation on
https://github.com/kalibera/rifcond
Please look at the check results for your package(s) in the respective outputs/*.Rcheck directories, as fix your package code as necessary.
Before resubmitting, ideally you would check yourself with current r-devel and the above setting to ensure that there are no more such problems.