t/op/index.t See if index works
t/op/int.t See if int works
t/op/join.t See if join works
+t/op/length.t See if length works
t/op/lex_assign.t See if ops involving lexicals or pad temps work
t/op/lfs.t See if large files work for perlio
t/op/list.t See if array lists work