fixed: GToSchema: infinite call: single constructor and recur#37
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why === I want to use GHC of supported [haskell/haskell-language-server: Official haskell ide support via language server (LSP). Successor of ghcide & haskell-ide-engine.](https://github.com/haskell/haskell-language-server).
I want timeout for test like below,
~~~hs
-- | create schema of self and ref another.
-- timeout in 1 seconds.
-- because avoid infinite call.
checkToSchemaDeclare :: (HasCallStack, ToSchema a) => Proxy a -> Value -> Spec
checkToSchemaDeclare proxy js = do
mActuial <- runIO $ timeout (secondsToMicroseconds 1) $ evaluate $ force $ runDeclare (declareSchemaRef proxy) mempty
case mActuial of
Nothing -> it "test is timeout" $ mActuial `shouldNotBe` Nothing
Just actuial -> actuial <=> js
secondsToMicroseconds :: Int -> Int
secondsToMicroseconds seconds = seconds * 10 ^ (6 :: Int)
~~~
However `Schema` is not `NFData`.
So I gave up.
I followed `declareSchemaRef` to make sure that the context of `InsOrdHashMap` disappears. Since the cause seems to be here, I rewrote it to keep the context and continue the calculation.
Contributor
Author
|
I would like to see this MERGE because it fixes a bug that will be important there in using this library. |
Collaborator
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Sorry @ncaq! Looks like I had wrong notifications configuration for this repo and did not notice this PR until you pinged me. |
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We combined Servant with OpenApi3 and found that the calculation does not finish if there is a cycled single field data type.
Since we were creating data types like the one described in our test data, and it was very annoying that we couldn't create OpenApi data, we investigated the cause and fixed it.
It seems that the test does not pass in the new version of GHC, and the same is true for the existing master, so we left it alone.
Thanks for the great library.
It would be great if you could incorporate it and release it.