[R] Mysterious seg fault --- SOLVED

[Henrik Bengtsson]

On Mon, Aug 13, 2018 at 3:51 AM Rolf Turner <r.turner using auckland.ac.nz> wrote:
>
>
> OK everybody!  You can relax.  :-) I managed to spot the loony.  After
> mucking around with valgrind, and before trying gdb, I had one more look
> at my code and *finally* saw the stupid thing that I had been doing.
>
> In the call to .Fortran() I had a line
>
>      nphi=as.integer(nphi),
>
> but "nphi" was nowhere defined (!!!) in the R code.  The name "nphi"
> appeared as an argument in the Fortran subroutine in question, but was
> nowhere actually *used*!!!

Didn't R CMD check pick this up, that is, didn't it report that 'nphi'
is a "global" variable?

/Henrik

>
> It seems that passing a non-existent value as an argument to a Fortran
> subroutine can *sometimes* confuse it.  Understandably.
>
> I think that this "nphi" was a left-over from an earlier version of the
> code.  I must have changed the code so that nphi was no longer needed,
> but then forgot to remove it from some places.  Psigh!  I hate myself
> sometimes.
>
> Anyhow, thanks to all those who took the time and made the effort to try
> to help me.
>
> cheers,
>
> Rolf
>
> --
> Technical Editor ANZJS
> Department of Statistics
> University of Auckland
> Phone: +64-9-373-7599 ext. 88276
>
> ______________________________________________
> 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.