I can also reproduce the problem with Arch's linux-next-git, see config: https://aur.archlinux.org/cgit/aur.git/tree/config?h=linux-next-git&id=f9a384e1c582321651fb613782ebc5a581146af0 I've bisected it to df8fc4e934c1 ("kbuild: Enable -fstrict-flex-arrays=3"), which explains why it only happens on GCC13. The problematic expansion that causes the error seems to be this fragment from `_BUG_FLAGS` in `arch/x86/include/asm/bug.h`: asm(".long %c0 - .\n": : "i" (__FILE__)); Along with the fact that this file is built with `-mcmodel=large` (see `PURGATORY_CFLAGS` in `arch/x86/purgatory/Makefile`). Regards, - Joan
