Squeak SmalltalkJoker Squeak Smalltalk : System : prevnext Check Image Objects

Hello Bryce,
Saturday, April 3, 2004, 2:18:43 PM, you wrote:
BK> I've fixed my recursive doesNotUnderstand problem. Just ran the
image BK> through the SystemTracer from SqueakMap.
BK> The problem produced image crashes like: <snip>
I remember running into a problem where an object's class was [String
new].  That didn't work very well.  Maybe my solution can help you
out.
What I did was to evaluate this in a workspace:
[self halt.  Smalltalk allObjectsDo: [:x | x yourself]] value
You get a debugger with the halt.  Simply skip over the halt and tell
the debugger to go ahead and continue.  Eventually, the simulation
crashes and you can find the object giving you grief.  Note that this
time the VM doesn't crash because it wasn't running code.  Just be
careful and don't inspect the bad object because chances are it could
not respond to anything.  Then, if you see it in a pane in the
debugger (in this case, x because it's the argument of the block that
had trouble), you can go to the pane and do something like String new
become: x (note become: is sent to String new, not x).  The garbage
collect and you should be done.
Andres.