The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2021.09.05.11.42.32 rillig src/tests/usr.bin/xlint/lint1/decl_struct_member.c,v 1.12 2021.09.05.11.42.32 rillig src/tests/usr.bin/xlint/lint1/decl_struct_member.exp,v 1.10 2021.09.05.11.43.22 mlelstv src/external/cddl/osnet/sys/kern/vfs.c,v 1.9 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2021.09.html#2021.09.05.11.43.22