Subject: RE: Part 2 for the Homework exercise
From: Karl Lieberherr (lieber@ccs.neu.edu)
Date: Thu Oct 24 2002 - 09:42:16 EDT
Hi Eric:
thank you for pointing this out. We certainly don't want our checker
to throw an exception.
Pengcheng: what is the best way to repair the program?
-- Karl
> -----Original Message-----
> From: Eric Robinson [mailto:tivadar@ccs.neu.edu]
> Sent: Thursday, October 24, 2002 7:46 AM
> To: com3205
> Subject: Part 2 for the Homework exercise
>
>
> The sample solutions that we got for part 3 on the previous
> homework have a
> bug of sorts in them. Since I spent an hour or two looking over my code
> trying to figure out what was wrong with it, only to discover the checker
> was at fault, I figured I'd sent out an email. In some cases you
> may get an
> exception fault, mine was occuring after a Foo.bar() test. The reason for
> this is that the checker still tries to check contains for static calls,
> which have null targets. In this case, the contains function in supplier
> can throw an exception because of a null pointer.
>
> Eric
>
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