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A general description is here.
‘write.table()’ now handles matrices of 2^31 or more elements, for those with large amounts of patience and disc space.
Several potential problems with compiler-specific behaviour have been identified using the ‘Undefined Behaviour Sanitizer’ in conjunction with the ‘clang’ compiler.
‘hcl()’ now honours ‘NA’ inputs (previously they were mapped to black).
‘namespaceImportFrom()’ needed to detect primitive functions when checking for duplicated imports (reported by Karl Forner).
Several functions did not handle zero-length vectors properly, including ‘browseEnv()’, ‘format()’, ‘gl()’, ‘relist()’ and ‘summary.data.frame()’. (E.g., PR#15499)
Improved handling of edge cases in ‘parallel::splitindices()’. (PR#15552)