https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89291
--- Comment #3 from zwieflhofer <walter.zwieflhofer at ineosteamuk dot com> --- Contacted NCAR, the providers of the source code. The bug is known to them and they have a workaround: Set -DBUILD_RRTMG_FAST=0 to -DBUILD_RRTMG_FAST=1 From my side, this bug report can be closed. But I expect it to resurface as more wrf users are moving to the later gcc compiler versions.