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encoding/gob: error decoding a slice of pointers to recursive type #47542

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dragos-scio opened this issue Aug 5, 2021 · 2 comments
Open

encoding/gob: error decoding a slice of pointers to recursive type #47542

dragos-scio opened this issue Aug 5, 2021 · 2 comments
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NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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Unplanned

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@dragos-scio
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What version of Go are you using (go version)?

$ go version
go version go1.15.14 darwin/amd64

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

go env Output
It reproduces in playground too

What did you do?

https://play.golang.org/p/Tjcurb98oUg

What did you expect to see?

Serialize / deserialize correctly.

What did you see instead?

If the first value passed is a list of pointers, it doesn't deserialize
@dragos-scio
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@shivaal-scio noticed this related bug, and how to encode / decode a non pointer version to avoid the issue
#2995 (comment)

@seankhliao seankhliao changed the title gob: wrong type (map[string][]*main.Result) for received field .Children encoding/gob: error decoding a recursive type Aug 7, 2021
@seankhliao seankhliao changed the title encoding/gob: error decoding a recursive type encoding/gob: error decoding a slice of pointers to recursive type Aug 7, 2021
@seankhliao
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cc @robpike

seems to be some initialization that works for the non pointer version
slightly shorter repro

@seankhliao seankhliao added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Aug 7, 2021
@seankhliao seankhliao added this to the Unplanned milestone Aug 20, 2022
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@seankhliao @dragos-scio