gob: type elliptic.p256Curve has no exported fields

[mithleshmeghwal0]

part_5 createwallet not working @Jeiwan

[Anmilover]

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[BryceWayne]

@mithleshmeghwal0 Which code section?

[mithleshmeghwal0]

@BryceWayne

blockchain_go/wallets.go

Line 87 in f35aa3c

log.Panic(err)

its failing on this line
Screeshot is from my local, so line number may differ

[BryceWayne]

elliptic.p256Curve should have no exported fields, right? Because of p being lowercase. Inspecting further.

[BryceWayne]

Here is why. https://cs.opensource.google/go/go/+/refs/tags/go1.19.4:src/crypto/elliptic/nistec.go;l=35;drc=38cfb3be9d486833456276777155980d1ec0823e

The field is not accessible outside the file.

[mithleshmeghwal0]

Yup, i inspected until this point, but can we do any work around this ?

[BryceWayne]

For context, https://stackoverflow.com/questions/32676898/whats-the-purpose-of-gob-register-method
The problem is saving the wallets map so that we can always reconstruct the data... Just thinking out loud.

[BryceWayne]

One way might be to create your own type/interface to access to field...
https://stackoverflow.com/questions/42664837/how-to-access-unexported-struct-fields

[mithleshmeghwal0]

Yup, i will try to create interface and i will comment or probably create PR for this . Thanks @BryceWayne

[mithleshmeghwal0]

@BryceWayne i tried to build a package with elliptic , but it still failed
@Jeiwan

[LangLiBa]

@BryceWayne

blockchain_go/wallets.go

Line 87 in f35aa3c

log.Panic(err)

its failing on this line
Screeshot is from my local, so line number may differ

Did you fix these,please?

[Anmilover]

您好，邮件已查收。Anmi、

[mithleshmeghwal0]

Seems @LangLiBa this repo is outdated, i created this issue long ago, there is no reply. I fixed this by using 1.18.9 go version.
I could have pursued to fix this, but my objective was to learn blockchain, not to fix this

[LangLiBa]

Seems @LangLiBa this repo is outdated, i created this issue long ago, there is no reply. I fixed this by using 1.18.9 go version. I could have pursued to fix this, but my objective was to learn blockchain, not to fix this

Ok, thanks a lot.

[BryceWayne]

Seems @LangLiBa this repo is outdated, i created this issue long ago, there is no reply. I fixed this by using 1.18.9 go version. I could have pursued to fix this, but my objective was to learn blockchain, not to fix this

Thanks @mithleshmeghwal0

[zzylmt]

I'm getting the same error, how should I fix this problem

[Anmilover]

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[zzylmt]

Is there another solution? Or please update the code based on the latest go version？thx.

[atsuyaourt]

Here is my workaround (see lns 89-143). Then remove ln 66 and ln 82 from wallets.go.

I implemented GobEncoder/GobDecoder interfaces to the Wallet struct so gob.Register(elliptic.P256()) can be removed.

[Anmilover]

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