https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108189
--- Comment #13 from Jose E. Marchesi <jemarch at gcc dot gnu.org> --- In bpf-next we are passing -Wno-error for the particular BPF selftests that use this construct: progs/btf_dump_test_case_bitfields.c-CFLAGS := -Wno-error progs/btf_dump_test_case_namespacing.c-CFLAGS := -Wno-error progs/btf_dump_test_case_packing.c-CFLAGS := -Wno-error progs/btf_dump_test_case_padding.c-CFLAGS := -Wno-error progs/btf_dump_test_case_syntax.c-CFLAGS := -Wno-error