[Bug-kawa] [bug #32678] set! and endless loop

[Per Bothner]

Follow-up Comment #3, bug #32678 (project kawa):

I don't believe the warning is a false positive.  Note that 'result' is never
assigned to.  I can't see how one would intentionally assign the result of a
non-terminating loop to a variable, even in a server-like application.  Notice
the warning goes away if the set! is replaced by just the do.
Perhaps an improved diagnostic can help:
/tmp/y.scm:5:22: warning - 'result' can never be set because expression never
finishes


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