I am looking for guidance on how to debug a CRAN warning for a package
(rstpm2). The warning is:
`Warning in formals(fun) : argument is not a function`
I tried debugging this by using:
.onLoad <- function(libname, pkgname) {
trace("formals", tracer = quote({
cat(">>> formals called in R CMD check with object of class:",
class(fun), "\n")
print(sys.calls())
}), print = FALSE)
}
At package installation, this showed that some formals() were called with
objects of class derivedDefaultMethod -- however I am not certain _which_
objects cause this issue. (I realise that this suggests an issue with S3 versus
S4 classes -- if that helps.) Does anyone have experience with debugging such
warnings? Any guidance would be appreciated.
Sincerely, Mark.
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