040000 tree 55a7ca8ab652e06561128fd42c975e67eaad9624	optional.bad_optional_access
040000 tree 6f95f317ea5f321c89a531796b2d560deb021958	optional.comp_with_t
040000 tree e71360ff5daf3a79beed23b97489dae8fbe5caf6	optional.hash
040000 tree 4132571803db2efa3964eddf45746d934e20e828	optional.nullops
040000 tree 9ebe6077160cb2db30db7724856e9e92496c55f2	optional.nullopt
040000 tree 39873ed2c6d5137dcc3d2eff16973424cb31f581	optional.object
040000 tree 5f7867bb2c0a9063c97d035cfef968cd0eb0b06c	optional.relops
040000 tree 9d50508ab0f0628160122b249349dca542bbd8b9	optional.specalg
040000 tree 08536524447735a2fa423b77b3edf00f1b3d9d71	optional.syn