https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102435
--- Comment #3 from Dimitry Andric <dimi...@unified-streaming.com> --- Note, in the mean time Ubuntu updated their default gcc version for Ubuntu 20.04 to 9.4.0: https://packages.ubuntu.com/focal-updates/devel/gcc-9 so this issue won't be encountered there anymore. Thanks.