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Re: "bound but never used" is brain damaged
- To: (BUG LISPM) at MIT-AI
- Subject: Re: "bound but never used" is brain damaged
- From: MLB@MIT-AI
- Date: Mon ,25 Sep 79 22:18:54 EDT
The compiler is brain damaged about "bound but never used":
(DEFUN SCREW (&AUX (FOO 69.)) (EVAL (READ)))
(screw) foo --> 105
(compile 'screw) --> Warning: FOO is bound but never used.
(screw) foo --> Barf, FOO is unbound, the sky is falling, etc.
It seems the compiler is trying to do some misguided "optimizing".
I have also observed it to mistakenly decide a variable isn't used
because it is inside a backquoted form, even though it actually IS
used because of being commatose.
What it should say is "Warning: compiler taking liberties with your code!"
Goddamnit, DWIS not DWIM!