[Bug-kawa] [bug #31355] warn-access-unknown-field

[Per Bothner]

Update of bug #31355 (project kawa):

                  Status:                    None => Fixed                  
             Assigned to:                    None => bothner                

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Follow-up Comment #2:

The problem was that <list> is a special kind of type - a LangObjType rather
than a regular ClassType, and the code didn't handle LangObjType as it should.
 I checked in a fix for this.
We now get:
/tmp/sl.scm:2:3: no slot `car' in list

Which catches an error - the specification should be <pair>, not <list>.

It would probably make sense to have this be controlled by an option, perhaps
--warn-unknown-member.  Probably the default should be on.  Should it be an
error by default?  This shoudl be re-considered, next release.

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