Thanks for catching this! This is a bug in the setup/dirs library, which the contract system transitively depends on to compute the path in the error message. I opened a pull request and let's see how it goes (#2352). On Thu, Nov 1, 2018 at 5:23 PM Alex Harsanyi <alexharsa...@gmail.com> wrote: > > > > On Thursday, November 1, 2018 at 7:38:29 PM UTC+8, Alexander McLin wrote: >> >> I’m a little confused here, to me it looks like the second contract >> violation is completely different from the first one. > > > My program is only seven lines of code and does not call `build-path`. Also, > if I fix the incorrect call to `foo` and rebuild the executable, the > `build-path` contract violation is no longer reported and the program runs > fine. You might wan to actually build the executable and run it using the > instructions I provided, to understand what I am trying to explain. > > #lang racket > (require racket/contract) > > (define/contract (foo n) > (-> integer? any/c) > (printf "foo: ~a~%" n)) > > (module+ main > (foo "hello")) > > This is just a small example that illustrates the problem -- I have an actual > application which is built into an executable and, whenever there is a > contract violation error reported, regardless of what the contract violation > is about, always the `build-path` contract violation shows up. At first, I > was puzzled by this, but now, I have learned that when I see a build path > contract error, I try to run the application in un-compiled mode (is there a > better term?) and try to reproduce the issue -- but this is not always easy > with complex applications. > > Alex. > >> >> You were expecting `foo` to raise a contract violation but in your >> executable example it appears that contract violation is being raised by the >> `build-path` function not `foo`. >> >> Maybe it’s a entirely different error? > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout.
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