Hi Ben,
According to https://www.stats.ox.ac.uk/pub/bdr/Rconfig/r-patched-solaris-x86
CRAN's Solaris is also 32 bit.
But maybe I am missing something?
You can download a Solaris VM (for Virtualbox or VMware) from
https://files.r-hub.io/solaris/
It has both 32 bit and 64 bit R (with gcc) and ODS R
I may have asked something like this before, but ...
The glmmTMB package is currently segfaulting (on the very first example)
on its CRAN Solaris checks
https://www.r-project.org/nosvn/R.check/r-patched-solaris-x86/glmmTMB-00check.html
> ## Comparing variance-covariance matrix with manu