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Functions ‘sessionData()’ and ‘browseAll()’ in package ‘methods’ are on a help page describing them as ‘deprecated’ and are now formally deprecated.
The Fortran code underlying ‘nlminb()’ could infinite-loop if any of the input functions returned ‘NA’ or ‘NaN’. This is now an error for the gradient or Hessian, and a warning for the function (with the value replaced by ‘Inf’). (In part, PR#15052.)