https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89494
--- Comment #6 from Piotr Kubaj <pkubaj at anongoth dot pl> --- (In reply to Richard Biener from comment #5) > So it looks like stage1 gcc is miscompiled somehow. I wonder if you can > avoid > setting CFLAGS et al? I just added CFLAGS+=-O0 and CXXFLAGS+=-O0. For now, the build is ongoing (I'm building GCC 7 first, as it had the most verbose errors), but I think it's already past the stage where it crashed. I will leave it open until all versions are built (7, 8, 9) Thanks!