[slime-devel] Minor swank-sbcl FRAME-LOCALS bug/patch

[Nathan Bird]

In swank-sbcl FRAME-LOCALS implementation (which I have some backend 
code calling to generate an alternate debugging screen) it attempts to 
loop across a vector that apparently can be null.  "The value NIL is not 
of type VECTOR."

I'm kind of surprised this function wasn't being called for the main 
SLDB; I haven't dug any further. The attached patch (just a when guard) 
fixes it for me.

Quick link to function: 
http://github.com/nablaone/slime/blob/master/swank-sbcl.lisp#L1141
I had just updated:
  Slime from d4c8a50 (Mon Sep 21) to b2ef1cf (Tue Dec 1) from git mirror 
at http://github.com/nablaone/slime/
  SBCL from 1.0.31 -> 1.0.33


Nathan Bird
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