UTS4             1726 gc/include/private/gcconfig.h #   ifdef UTS4
UTS4             1984 gc/include/private/gcconfig.h # if defined(SUNOS5) || defined(DRSNX) || defined(UTS4)
UTS4              437 gc/mach_dep.c                    || defined(UTS4) || defined(LINUX) || defined(EWS4800)
UTS4              509 gc/os_dep.c    #   if defined(sigmask) && !defined(UTS4) && !defined(HURD)