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go/parser, go/types: remove support for type list syntax (cleanup) #48261

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findleyr opened this issue Sep 8, 2021 · 6 comments
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go/parser, go/types: remove support for type list syntax (cleanup) #48261

findleyr opened this issue Sep 8, 2021 · 6 comments
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NeedsFix The path to resolution is known, but the work has not been done.
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@findleyr
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findleyr commented Sep 8, 2021

Reminder issue.

We still have some code to support the type list syntax (interface{ type A, B }) in go/parser and go/types.

Filing this to make sure it is cleaned up.

CC @griesemer

@findleyr findleyr added the NeedsFix The path to resolution is known, but the work has not been done. label Sep 8, 2021
@findleyr findleyr added this to the Go1.18 milestone Sep 8, 2021
@findleyr findleyr self-assigned this Sep 8, 2021
@toothrot
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Checking in on this issue as it's labeled a release blocker for Go 1.18. Is there any update?

@findleyr
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No update. This is a lower priority than other issues, so probably won't be done until we're in the freeze.

@griesemer
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griesemer commented Sep 22, 2021

This is not a release-blocker. For one, the compiler doesn't actually permit the type list notation anymore (the functionality is disabled) so it's unlikely for go/parser to encounter such code. Secondly, go/types reports an error if it does in fact encounter such code. So no matter how this is sliced and diced, using a type list is invalid code.

@griesemer griesemer changed the title go/parser, go/types: remove support for type list syntax go/parser, go/types: remove support for type list syntax (cleanup) Sep 22, 2021
@ianlancetaylor
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@griesemer @findleyr Is there more to do here for 1.18? Thanks.

@griesemer
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@findleyr If this is only about cleaning up/removing unused code, let's move it to 1.19.

@findleyr
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Err, sorry for the lack of response on this issue.

This was done in https://go.dev/cl/359135.

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