Comment 1 for bug 841260

They are reported. What you're experiencing is the either *evalutor-mode* :interpret, or EVAL muffling of style-warnings from compiling the toplevel form prior to its execution.

CL-USER> (compile nil '(lambda () (flet ((foo () ())))))
; in: LAMBDA ()
; (FLET ((FOO NIL NIL)))
;
; note: deleting unused function
; (FLET FOO)
;
; compilation unit finished
; printed 1 note
#<FUNCTION (LAMBDA ()) {10030DE0D9}>
NIL
NIL