tree 0b09788c66c96135c16ee4d3694a72cce8322a55
parent 71f22dcf76e171e24a9f6825d58a04f5b5bd0ea7
author Darrick J. Wong <darrick.wong@oracle.com> 1515799663 -0800
committer Darrick J. Wong <darrick.wong@oracle.com> 1523418886 -0700

misc: enable UBSAN if the builder wants it

Enable the undefined behavior sanitizer (ubsan) if the builder requests
it and it's available.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>