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Add missing decoder case for NaN #251

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merged 1 commit into from
Sep 4, 2024

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danieka
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@danieka danieka commented Sep 3, 2024

When running against our Mongo instance we got the following error:

%FunctionClauseError{module: BSON.Decoder, function: :type, arity: 2, kind: nil, args: nil, clauses: nil}

Turns out that, at least for our Mongo installation, this case is used for NaN. I have validated that the value is NaN in Mongo Compass and adding this case results in the document being deserialised to the same values as in Compass.

@danieka danieka force-pushed the add-nan-decoder-case branch from 0a9a5dd to 79a2413 Compare September 3, 2024 15:02
@danieka danieka force-pushed the add-nan-decoder-case branch from 79a2413 to dc8c291 Compare September 3, 2024 17:11
@zookzook
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zookzook commented Sep 4, 2024

This is interesting. Could you provide the version of the MongoDB? The only different is, that the sign bit is set to 1.

@zookzook zookzook merged commit c6c3c95 into zookzook:master Sep 4, 2024
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@zookzook
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zookzook commented Sep 4, 2024

Thank you!

@danieka
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danieka commented Sep 6, 2024

@zookzook We use MongoDB 7.3.3 Enterprise, but this could also be related to the library we use for writing to Mongo, but I don't know what we use there.

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2 participants