t/lib/croak/pp_hot Test croak calls from pp_hot.c
t/lib/croak/pp_sys Test croak calls from pp_sys.c
t/lib/croak/toke Test croak calls from toke.c
+t/lib/croak/toke_l1 Test croak calls from toke.c; file is not UTF-8 encoded
t/lib/cygwin.t Builtin cygwin function tests
t/lib/dbmt_common.pl Common functionality for ?DBM_File tests
t/lib/deprecate.t Test deprecate.pm