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cmd/compile: wrong type reported for generic cyclic interface #56046

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griesemer opened this issue Oct 4, 2022 · 0 comments
Open

cmd/compile: wrong type reported for generic cyclic interface #56046

griesemer opened this issue Oct 4, 2022 · 0 comments
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@griesemer @findleyr
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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Milestone
Backlog

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@griesemer
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package main

import "fmt"

type I[R any] interface{ m() R }
type J interface{ I[interface{ J }] }

func main() {
	fmt.Printf("%T\n", J.m)
}

reports the wrong type when run:

func(main.J) interface {}

(reported by @mdempsky)
@griesemer griesemer added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Oct 4, 2022
@griesemer griesemer added this to the Backlog milestone Oct 4, 2022
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Oct 4, 2022
@mdempsky mdempsky mentioned this issue Oct 8, 2022
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@griesemer griesemer

@findleyr findleyr

Labels
compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Projects
Go Compiler / Runtime
Status: Todo
Milestone
Backlog
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@griesemer @gopherbot @findleyr