On 8 January 2019 at 21:31, Fellows, Ian wrote:
| I have a package ( https://github.com/statnet/lolog | 
https://cran.r-project.org/web/packages/lolog/index.html ) that makes extensive 
use of Rcpp modules and passes module objects up and down between R and C++ 
regularly. I’ve used the package extensively in large simulation studies, and 
analyses where it has been stable.
| 
| However, I have become aware of an intermittent failure to re-build the 
vignettes during R CMD check. I’ve only ever encountered the issue during 
check. Every once in a while I get WARNINGS like the following:

[...]

| I’ve attempted to isolate the problem to something of a smaller but have thus 
far been unsuccessful. Since this only happens occasionally, I thought it might 
have something to do with how I’m passing objects up and down ( see for 
example: https://github.com/statnet/lolog/blob/master/inst/include/Model.h#L89 
and https://github.com/statnet/lolog/blob/master/inst/include/util.h#L29 ), but 
that is just a shot in the dark.
| 
| Does anyone have any insight as to how i might be able to better debug this 
or intuitions about what could be the cause? Is it possible to get a stack 
trace when rebuilding the vignettes?

I do not. I have at times simplified, going as far as rendering the tex
locally and shipping a not-really-vignette vignette that is just pdf.

Which is of course a cop-out. That should be debug-able but one does not
always get to the bottom ...  Maybe someone else has a better idea.

Dirk

-- 
http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org
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