https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79821
--- Comment #4 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot
Uni-Bielefeld.DE> ---
> --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
> possibly GC parameter sensitive
Indeed: the default is
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Increasing either param tenfold lets the compilation succeed.
Rainer
