Intermittent segfaults on Ubuntu

[sbfnk]

Seeing the R CMD check action sometimes failing during garbage cleaning on Ubuntu with a segmentation fault. This happens with current and older (#421) versions of EpiNow2 as well as with current and older (#427) versions of StanHeaders:

Example outut:

    *** caught segfault ***
  address 0x55ec00000004, cause 'memory not mapped'
  
  Traceback:
   1: gc()
   2: showConnections()
   3: cleanEx()
  An irrecoverable exception occurred. R is aborting now ...
  Segmentation fault (core dumped)

[seabbs]

Do you think this is memory related?

[sbfnk]

It certainly looks like it - though not clear to me at all what exactly the issue is.

[sbfnk]

This seems to have resolved itself without any code change.