https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89840
--- Comment #2 from Damian Rouson <damian at sourceryinstitute dot org> --- The PR was cited in the original description: Bug 64777. It was closed for lack of a test cased and the person who closed it suggested opening a new PR if a test case was provided so I attempted to do so. Upon consulting the Fortran 2018 standard, however, I see not evidence that first argument of CO_BROADCAST will be finalized so this PR can be closed.