[R] Problem with checks on R/4.0.0

[Martin Maechler]

>>>>> Jeff Newmiller 
>>>>>     on Thu, 21 May 2020 13:30:26 -0700 writes:

    > Do read the Posting Guide... you are on the wrong mailing list for this question.
    > On May 20, 2020 6:46:01 PM PDT, Simon Michnowicz via R-help <r-help using r-project.org> wrote:
    >> Dear R Group,
    >> I can build a simple R/4.0.0 OK using   gcc/8.1.0, but when I tried to
    >> link
    >> it with  the Intel MKL,  'make check' produced this error
    >> 
    >> tail tests/reg-tests-1d.Rout.fail
    >> 
    >>> (m <- cbind(0, c(NA, 0), 0:-1))
    >> [,1] [,2] [,3]
    >> [1,]    0   NA    0
    >> [2,]    0    0   -1
    >>> nTypes <- eval(formals(base::norm)$type) # "O" "I" "F" "M" "2"
    >>> stopifnot(is.na( print(vapply(nTypes, norm, 0., x = m)) )) # print():
    >> show NA *or* NaN
    >> O  I  F  M  2
    >> NA NA  1 NA NA
    >> Error: is.na(print(vapply(nTypes, norm, 0, x = m))) are not all TRUE
    >> Execution halted
    >> 
    >> Is this a significant error?
    >> There may be differences in how NaN are treated between GNU and MKL
    >> that
    >> caused this.

Yes, there are such differences.
This one is indeed new bug in that version of Lapack  which
in the mean time has been fixed AFAIK...
definitely has been fixed in R's builtin version of Lapack.

Martin Maechler
ETH Zurich  and   R Core Team


    >> regards
    >> 
    >> 
    >> *---Simon Michnowicz *
    >> Senior Application Specialist,  High-Performance Computing
    >> 
    >> *Research Support Services - eSolutions*
    >> *Monash eResearch Centre*
    >> Monash University
    >> 15 Innovation Walk, Building 75, Clayton Campus
    >> Wellington Road, VIC 3800
    >> Australia
    >> 
    >> T:  +61 3 9902 0794
    >> M: +61 3 0418 302 046
    >> E: simon.michnowicz using monash.edu
    >> monash.edu
    >> 
    >> [[alternative HTML version deleted]]
    >> 
    >> ______________________________________________
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    > -- 
    > Sent from my phone. Please excuse my brevity.

    > ______________________________________________
    > R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
    > https://stat.ethz.ch/mailman/listinfo/r-help
    > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
    > and provide commented, minimal, self-contained, reproducible code.