The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the first successful build:
2025.03.23.23.58.56 christos src/external/gpl3/gcc/lib/preinit.mk 1.3 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2025.03.html#2025.03.23.23.58.56