t/op/subst_wamp.t See if substitution works with $& present
t/op/sub_lval.t See if lvalue subroutines work
t/op/sysio.t See if sysread and syswrite work
-t/op/system_tests Test runner for system.t
t/op/taint.t See if tainting works
t/op/tie.t See if tie/untie functions work
t/op/tiearray.t See if tie for arrays works
t/uni/upper.t See if Unicode casing works
t/win32/longpath.t Test if Win32::GetLongPathName() works
t/win32/system.t See if system works in Win*
+t/win32/system_tests Test runner for system.t
t/x2p/s2p.t See if s2p/psed work
taint.c Tainting code
thrdvar.h Per-thread variables