1*065ef8f7SEd MasteBuild the base system with Undefined Behavior Sanitizer (UBSan) to detect 2*065ef8f7SEd Mastevarious kinds of undefined behavior at runtime. 3*065ef8f7SEd MasteRequires that Clang be used as the base system compiler 4*065ef8f7SEd Masteand that the runtime support library is available 5