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‘R CMD check’ now reports as warnings what ‘gfortran’ calls ‘Fortran 2018 deleted features’, all of which have long been marked as ‘obsolescent’ and some of which were deleted in Fortran 2008 or earlier. Fortran compilers are no longer required to support these.
The error message from ‘<POSIXlt>[["hour"]]’ and similar now mentions ‘*[[, "hour"]]’, as wished for in PR#17409 and proposed by Michael Chirico.
‘qbinom()’ and potentially ‘qpois()’, ‘qnbinom()’, no longer sometimes fail accurate inversion (of ‘pbinom()’, etc), thanks to Christopher Chang's report and patch in PR#18711.