t/lib/Count.pm Helper for t/op/method.t
t/lib/croak/mg Test croak calls from mg.c
t/lib/croak/op Test croak calls from op.c
+t/lib/croak/pp Test croak calls from pp.c
t/lib/croak/pp_ctl Test croak calls from pp_ctl.c
t/lib/croak/pp_hot Test croak calls from pp_hot.c
t/lib/croak.t Test calls to Perl_croak() in the C source.