true
false
-Reciever is null in rterror_null_receiver_alt6::Sys::(kernel::Sys::main) (alt/rterror_null_receiver_alt6.nit:31)
-,---- Stack trace -- - - -
-| rterror_null_receiver_alt6::Sys::(kernel::Sys::main) (alt/rterror_null_receiver_alt6.nit:23)
-`------------------- - - -
+Reciever is null (alt/rterror_null_receiver_alt6.nit:31)