Build fails on current 19.07 - have previously built older versions (still 19.07) on current system, yet uncertain at what point it started failing. Local environment has been cleaned (make clean, make distclean).
Build environment: Arch Linux 5.6.11-arch1-1 x86_64
Tried another build (targeting x86_64, otherwise clean config) on commit 45b586c, which results in the same error. Can not try older versions directly as system is now running gcc and g++ versions 10.1.0.