[Chicken-hackers] strange error message, please help with interpretation

[Jörg F . Wittenberger]

In my prog I have a structure

(define-record-type <uri>
...
(path uri-path)
...)

--: Which happened to work for years so far.  Unchanged :--

Now, after upgrading from 4.7.5 to 4.8.2 I found this in the log:

 bad argument type - not a structure of the required type
 (bad argument type - not a structure of the required type
 (#<<uri>> <uri>) uri-path)

That is, not always; it's still working much more than 99% of the time.

So how would I interpret this message.  As far as I can see, this
tells me that somehow a typecheck failed on a (struct <uri>)
testing it to be a (struct <uri>) -- which would have been supposed
to succeed.

Am I missing something????

Just too strange.

Thanks a lot

/Jörg





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