I posted a note concerning a bug message sbcl produces upon struct
redefinition. I know struct redefinition is problematic but the error
message makes this sound like a real glitch.
Here is a short file that produces the message.
This is on 0.8.8 OS X.
Compile this file, then load it. Then uncomment y field in foo.
Then recompile, and load again. The 2nd compilation
produces the error, apparently when a struct contained in another struct
attempt to dump reference to obsolete class: #<sb-kernel:structure-classoid
and the 2nd load produces the error:
fasl stack not empty when it should be
This is probably a bug in SBCL itself.....
;(y 0) ;; uncomment this line after first load
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