The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2017.10.07.00.06.11 kre
src/external/gpl3/gcc.old/lib/libasan/shlib_version,v 1.4
2017.10.07.00.06.12 kre
src/external/gpl3/gcc.old/lib/libubsan/shlib_version,v 1.2
Log files can be found at:
http://releng.NetBSD.org/b5reports/i386/commits-2017.10.html#2017.10.07.00.06.12
