go/internal/gcimporter: untyped interface type parameter causes "panic: nil underlying" during testing #57015

csgura · 2022-12-01T01:40:03Z

What version of Go are you using (`go version`)?

$ go version
go version devel go1.20-c85848a4a6 Wed Nov 30 23:25:43 2022 +0000 darwin/arm64

Does this issue reproduce with the latest release?

Yes

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

go env Output

$ go env
GO111MODULE=""
GOARCH="arm64"
GOBIN=""
GOCACHE="/Users/gura/Library/Caches/go-build"
GOENV="/Users/gura/Library/Application Support/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="arm64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/gura/go/pkg/mod"
GONOPROXY="*.uangel.com"
GONOSUMDB="*.uangel.com"
GOOS="darwin"
GOPATH="/Users/gura/go"
GOPRIVATE="*.uangel.com"
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/Users/gura/sdk/gotip"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/Users/gura/sdk/gotip/pkg/tool/darwin_arm64"
GOVCS=""
GOVERSION="devel go1.20-c85848a4a6 Wed Nov 30 23:25:43 2022 +0000"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/dev/null"
GOWORK=""
CGO_CFLAGS="-O2 -g"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-O2 -g"
CGO_FFLAGS="-O2 -g"
CGO_LDFLAGS="-O2 -g"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/mr/dvhjg7zd4l125pln73bqyr400000gp/T/go-build2626569659=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

https://go.dev/play/p/ZQZ-dOAbTbo?v=gotip

What did you expect to see?

No Error

What did you see instead?

$ gotip test ./...
# gotiperr
panic: nil underlying [recovered]
        panic: nil underlying

goroutine 1 [running]:
go/types.(*Checker).handleBailout(0x140000f81e0, 0x14000117a88)
        /Users/gura/sdk/gotip/src/go/types/check.go:299 +0x98
panic({0x1031cab00, 0x10321ebf8})
        /Users/gura/sdk/gotip/src/runtime/panic.go:884 +0x1f4
go/types.(*Named).under(0x1400010eaf0)
        /Users/gura/sdk/gotip/src/go/types/named.go:494 +0x34c
go/types.under({0x1032211f0?, 0x1400010eaf0?})
        /Users/gura/sdk/gotip/src/go/types/type.go:23 +0x4c
go/types.computeInterfaceTypeSet(0x0, 0x0?, 0x14000138140)
        /Users/gura/sdk/gotip/src/go/types/typeset.go:273 +0x2c8
go/types.(*Interface).typeSet(0x1031d6e60?)
        /Users/gura/sdk/gotip/src/go/types/interface.go:29 +0x2c
go/types.(*typeWriter).typ(0x1400013a0c0, {0x103221178, 0x14000138140})
        /Users/gura/sdk/gotip/src/go/types/typestring.go:239 +0x4c0
go/types.(*typeWriter).typeList(0x1400013a0c0?, {0x14000097970, 0x1, 0x0?})
        /Users/gura/sdk/gotip/src/go/types/typestring.go:372 +0x44
go/types.(*Context).instanceHash(0x140000c0ce0, {0x1032211f0, 0x1400010ea80}, {0x14000097970, 0x1, 0x1})
        /Users/gura/sdk/gotip/src/go/types/context.go:79 +0xd4
go/types.(*Checker).instance(0xffffffffffffffff?, 0x400000005?, {0x1032211f0?, 0x1400010ea80?}, {0x14000097970, 0x1, 0x1}, 0x0, 0x140000c0ce0)
        /Users/gura/sdk/gotip/src/go/types/instantiate.go:97 +0x1e8
go/types.Instantiate(0x140001165a0?, {0x1032211f0?, 0x1400010ea80}, {0x14000097970, 0x1, 0x1}, 0x0?)
        /Users/gura/sdk/gotip/src/go/types/instantiate.go:63 +0x2f0
go/internal/gcimporter.(*reader).doTyp(0x140001165a0)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:334 +0xd0
go/internal/gcimporter.(*pkgReader).typIdx(0x140000c90e0, {0x29?, 0x0?}, 0x140000b1380)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:308 +0x154
go/internal/gcimporter.(*reader).typ(0x140000b13e0)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:278 +0x4c
go/internal/gcimporter.(*reader).param(0x140000b13e0)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:453 +0x58
go/internal/gcimporter.(*reader).params(0x140000b13e0)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:442 +0x78
go/internal/gcimporter.(*reader).signature(0x140000b13e0, 0x140001343f8?, {0x0, 0x0, 0x0}, {0x0, 0x0, 0x0})
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:431 +0x58
go/internal/gcimporter.(*pkgReader).objIdx(0x140000c90e0, 0x6?)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:529 +0x7f4
go/internal/gcimporter.readUnifiedPackage(0x1400011e9c0, 0x0, 0x14000099c50, {0x1, 0x0, {0x140000b4f10, 0xf}, {0x140001341e0, 0x4b3}, {0x140000f21c0, ...}, ...})
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:83 +0x2d4
go/internal/gcimporter.Import(0x1?, 0x0?, {0x140000b4f10, 0xf}, {0x0?, 0x1031ddfe0?}, 0x140000976f0?)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/gcimporter.go:202 +0x60c
go/importer.(*gcimports).ImportFrom(0x14000117058?, {0x140000b4f10?, 0x103101150?}, {0x0?, 0x1031de3e0?}, 0x140000c8d80?)
        /Users/gura/sdk/gotip/src/go/importer/importer.go:102 +0x4c
go/importer.(*gcimports).Import(0x1031d83c0?, {0x140000b4f10?, 0x140000be241?})
        /Users/gura/sdk/gotip/src/go/importer/importer.go:95 +0x2c
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.run.func2({0x140000be241?, 0x140000c0b20?})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:222 +0x6c
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.importerFunc.Import(0x140001171e8?, {0x140000be241?, 0x140000c0b20?})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:401 +0x30
go/types.(*Checker).importPackage(0x140000f81e0, {0x10321f920, 0x140000c0a20}, {0x140000be241, 0xf}, {0x140000ba640, 0x18})
        /Users/gura/sdk/gotip/src/go/types/resolver.go:163 +0x1c0
go/types.(*Checker).collectObjects.func1({0x103220300?, 0x14000099ad0?})
        /Users/gura/sdk/gotip/src/go/types/resolver.go:267 +0xc0
go/types.(*Checker).walkDecl(0x140000ba640?, {0x103221a38?, 0x1400011ea00?}, 0x14000117950)
        /Users/gura/sdk/gotip/src/go/types/decl.go:404 +0x1a4
go/types.(*Checker).walkDecls(...)
        /Users/gura/sdk/gotip/src/go/types/decl.go:391
go/types.(*Checker).collectObjects(0x140000f81e0)
        /Users/gura/sdk/gotip/src/go/types/resolver.go:254 +0x990
go/types.(*Checker).checkFiles(0x140000f81e0, {0x140000ae5e8?, 0x140000c3950?, 0x0?})
        /Users/gura/sdk/gotip/src/go/types/check.go:326 +0xa4
go/types.(*Checker).Files(...)
        /Users/gura/sdk/gotip/src/go/types/check.go:304
go/types.(*Config).Check(0x1031d7d60?, {0x140000b4f08?, 0x140000180a7?}, 0x5?, {0x140000ae5e8, 0x1, 0x1}, 0x102eff8dc?)
        /Users/gura/sdk/gotip/src/go/types/api.go:416 +0x70
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.run(0x1400011e9c0, 0x140000a3c70, {0x1400011e880, 0x8, 0x1031d56c0?})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:238 +0x408
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.Run({0x16cf0afa0?, 0x1c?}, {0x1400011e880, 0x8, 0x8})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:132 +0x90
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.Main({0x1400011c000, 0x1c, 0x1c})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:119 +0x2d0
main.main()
        /Users/gura/sdk/gotip/src/cmd/vet/main.go:45 +0x458
# gotiperr/option_test
panic: nil underlying [recovered]
        panic: nil underlying

goroutine 1 [running]:
go/types.(*Checker).handleBailout(0x140001781e0, 0x14000197a88)
        /Users/gura/sdk/gotip/src/go/types/check.go:299 +0x98
panic({0x103056b00, 0x1030aabf8})
        /Users/gura/sdk/gotip/src/runtime/panic.go:884 +0x1f4
go/types.(*Named).under(0x1400018eaf0)
        /Users/gura/sdk/gotip/src/go/types/named.go:494 +0x34c
go/types.under({0x1030ad1f0?, 0x1400018eaf0?})
        /Users/gura/sdk/gotip/src/go/types/type.go:23 +0x4c
go/types.computeInterfaceTypeSet(0x0, 0x0?, 0x140001b6230)
        /Users/gura/sdk/gotip/src/go/types/typeset.go:273 +0x2c8
go/types.(*Interface).typeSet(0x103062e60?)
        /Users/gura/sdk/gotip/src/go/types/interface.go:29 +0x2c
go/types.(*typeWriter).typ(0x140001b80f0, {0x1030ad178, 0x140001b6230})
        /Users/gura/sdk/gotip/src/go/types/typestring.go:239 +0x4c0
go/types.(*typeWriter).typeList(0x140001b80f0?, {0x14000119980, 0x1, 0x0?})
        /Users/gura/sdk/gotip/src/go/types/typestring.go:372 +0x44
go/types.(*Context).instanceHash(0x14000142da0, {0x1030ad1f0, 0x1400018ea80}, {0x14000119980, 0x1, 0x1})
        /Users/gura/sdk/gotip/src/go/types/context.go:79 +0xd4
go/types.(*Checker).instance(0xffffffffffffffff?, 0x400000005?, {0x1030ad1f0?, 0x1400018ea80?}, {0x14000119980, 0x1, 0x1}, 0x0, 0x14000142da0)
        /Users/gura/sdk/gotip/src/go/types/instantiate.go:97 +0x1e8
go/types.Instantiate(0x140001965a0?, {0x1030ad1f0?, 0x1400018ea80}, {0x14000119980, 0x1, 0x1}, 0x0?)
        /Users/gura/sdk/gotip/src/go/types/instantiate.go:63 +0x2f0
go/internal/gcimporter.(*reader).doTyp(0x140001965a0)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:334 +0xd0
go/internal/gcimporter.(*pkgReader).typIdx(0x140001490e0, {0x29?, 0x0?}, 0x140001332c0)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:308 +0x154
go/internal/gcimporter.(*reader).typ(0x14000133320)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:278 +0x4c
go/internal/gcimporter.(*reader).param(0x14000133320)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:453 +0x58
go/internal/gcimporter.(*reader).params(0x14000133320)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:442 +0x78
go/internal/gcimporter.(*reader).signature(0x14000133320, 0x140001b23f8?, {0x0, 0x0, 0x0}, {0x0, 0x0, 0x0})
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:431 +0x58
go/internal/gcimporter.(*pkgReader).objIdx(0x140001490e0, 0x6?)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:529 +0x7f4
go/internal/gcimporter.readUnifiedPackage(0x1400019e9c0, 0x0, 0x1400011bc80, {0x1, 0x0, {0x14000136f00, 0xf}, {0x140001b21e0, 0x4b3}, {0x140001721c0, ...}, ...})
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/ureader.go:83 +0x2d4
go/internal/gcimporter.Import(0x1?, 0x0?, {0x14000136f00, 0xf}, {0x0?, 0x103069fe0?}, 0x14000119700?)
        /Users/gura/sdk/gotip/src/go/internal/gcimporter/gcimporter.go:202 +0x60c
go/importer.(*gcimports).ImportFrom(0x14000197058?, {0x14000136f00?, 0x102f8d150?}, {0x0?, 0x10306a3e0?}, 0x14000148d80?)
        /Users/gura/sdk/gotip/src/go/importer/importer.go:102 +0x4c
go/importer.(*gcimports).Import(0x1030643c0?, {0x14000136f00?, 0x14000140259?})
        /Users/gura/sdk/gotip/src/go/importer/importer.go:95 +0x2c
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.run.func2({0x14000140259?, 0x14000142be0?})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:222 +0x6c
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.importerFunc.Import(0x140001971e8?, {0x14000140259?, 0x14000142be0?})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:401 +0x30
go/types.(*Checker).importPackage(0x140001781e0, {0x1030ab920, 0x14000142a20}, {0x14000140259, 0xf}, {0x14000158180, 0x1f})
        /Users/gura/sdk/gotip/src/go/types/resolver.go:163 +0x1c0
go/types.(*Checker).collectObjects.func1({0x1030ac300?, 0x1400011bad0?})
        /Users/gura/sdk/gotip/src/go/types/resolver.go:267 +0xc0
go/types.(*Checker).walkDecl(0x14000158180?, {0x1030ada38?, 0x1400019ea00?}, 0x14000197950)
        /Users/gura/sdk/gotip/src/go/types/decl.go:404 +0x1a4
go/types.(*Checker).walkDecls(...)
        /Users/gura/sdk/gotip/src/go/types/decl.go:391
go/types.(*Checker).collectObjects(0x140001781e0)
        /Users/gura/sdk/gotip/src/go/types/resolver.go:254 +0x990
go/types.(*Checker).checkFiles(0x140001781e0, {0x140001305f8?, 0x1400010d9f0?, 0x0?})
        /Users/gura/sdk/gotip/src/go/types/check.go:326 +0xa4
go/types.(*Checker).Files(...)
        /Users/gura/sdk/gotip/src/go/types/check.go:304
go/types.(*Config).Check(0x103063d60?, {0x14000140240?, 0x140000180a7?}, 0x5?, {0x140001305f8, 0x1, 0x1}, 0x102d8b8dc?)
        /Users/gura/sdk/gotip/src/go/types/api.go:416 +0x70
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.run(0x1400019e9c0, 0x140001a01a0, {0x1400019e880, 0x8, 0x1030616c0?})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:238 +0x408
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.Run({0x16d07ef70?, 0x1c?}, {0x1400019e880, 0x8, 0x8})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:132 +0x90
cmd/vendor/golang.org/x/tools/go/analysis/unitchecker.Main({0x1400019c000, 0x1c, 0x1c})
        /Users/gura/sdk/gotip/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go:119 +0x2d0
main.main()
        /Users/gura/sdk/gotip/src/cmd/vet/main.go:45 +0x458
FAIL    gotiperr/option [build failed]
FAIL

The text was updated successfully, but these errors were encountered:

cuonglm · 2022-12-01T15:00:56Z

I can't reproduce this locally, either with current tip or with c85848a

toothrot · 2022-12-01T21:15:57Z

I haven't been able to reproduce this either. Can you still reproduce this, @csgura?

csgura · 2022-12-02T12:08:17Z

Sorry for the late reply.
I posted the wrong source. This is the code causing the error.

https://go.dev/play/p/bnxnM-U3JLm?v=gotip

randall77 · 2022-12-05T18:14:26Z

I can reproduce.

This is vet crashing inside of go/types.
@findleyr @griesemer

findleyr · 2022-12-05T18:49:14Z

@randall77 what exactly did you do to reproduce? I copied the files exactly (I thought), and don't see the same at tip.

Without go 1.18 in the go.mod, for example, I get an error about -lang. With go 1.18, I get no error.

findleyr · 2022-12-05T18:55:35Z

Nevermind, I copied from the wrong playground link. I can reproduce.

randall77 · 2022-12-05T18:55:41Z

issue57015 % find . 
.
./go.mod
./option
./option/option.go
./option/option_test.go
./main.go

go.mod:

module gotiperr

go 1.18

main.go:

package main

import "gotiperr/option"

func main() {
	_ = option.Option[int]{}
}

option.go:

package option

import "io"

type Option[T any] struct {
}

func GetCloser() Option[interface {
	io.Closer
}] {
	panic("")
}

option_test.go:

package option_test

import (
	"gotiperr/option"
	"testing"
)

func TestNil(t *testing.T) {
	_ = option.Option[int]{}

}

findleyr · 2022-12-05T19:10:09Z

Thanks, I am able to reproduce.

Will take a closer look later this afternoon. The error suggests that we're trying to instantiate with a type that isn't completely set up. This is related to the new ureader code, but may be an artifact of overly tricky setup for importing named types via go/types.

CC @mdempsky

heschi · 2022-12-05T22:05:34Z

Does this need to block the RC?

findleyr · 2022-12-05T22:08:21Z

Ok, I looked into it. This panic can be reached via importing the following package:

package p

import "io"

type Option[T any] struct {
}

var X Option[interface{ io.Closer }]

The issue is that in the unified importer, io.Closer has not had its underlying set when Option[interface{ io.Closer }] is created. We need the underlying in order to compute the identify (i.e. hash) of the interface type argument, for the purpose of looking up in the types.Context. There's no way around this: we always need to be able to hash the type argument when instantiating, even if a nil Context is passed, for the purpose of cycle-breaking.

Playing around with the unified importer, I see that we can make this work by invoking laterFors[t] whenever we embed t, i.e. ensure that any embedded type is complete. But that is an unsatisfying and partial solution. I think perhaps https://go.dev/cl/424876 may be a better solution.

randall77 · 2022-12-05T22:09:08Z

I don't think so. It affects vet, so at most it would affect testing setups. You could still build a binary and test it in production without fixing this issue. Although if your test doesn't compile, you may not want to push an untested binary to production...

findleyr · 2022-12-05T22:10:11Z

@heschi @randall77 I'm not sure what the threshold is for the RC, but this seems like it would be pretty easy encounter when using the RC.

findleyr · 2022-12-05T22:19:05Z

Assigning to @mdempsky since this is related to the unified importer and https://go.dev/cl/424876 looks like a candidate fix.

Matthew: can we revisit that CL?

gopherbot · 2022-12-06T19:37:41Z

Change https://go.dev/cl/424876 mentions this issue: go/internal/gcimporter: simplify unified IR importer

gopherbot · 2022-12-08T23:19:25Z

Change https://go.dev/cl/456376 mentions this issue: internal/gcimporter: port CL 424876 from std importer

This is a port of CL 424876, except it temporarily maintains a fallback path for older cmd/compile behavior before CL 455279, to avoid breaking users following Go tip. Updates golang/go#57015. Change-Id: I168d171153d96485e92be19645422fe65ab4b345 Reviewed-on: https://go-review.googlesource.com/c/tools/+/456376 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Auto-Submit: Matthew Dempsky <mdempsky@google.com> gopls-CI: kokoro <noreply+kokoro@google.com> Reviewed-by: Robert Findley <rfindley@google.com>

gopherbot added the compiler/runtime label Dec 1, 2022

toothrot added the NeedsInvestigation label Dec 1, 2022

toothrot added this to the Backlog milestone Dec 1, 2022

mdempsky added the WaitingForInfo label Dec 1, 2022

randall77 added the release-blocker label Dec 5, 2022

randall77 modified the milestones: Backlog, Go1.20 Dec 5, 2022

findleyr assigned mdempsky Dec 5, 2022

findleyr changed the title ~~cmd/compile: untyped interface type parameter causes "panic: nil underlying" during testing~~ go/internal/gcimporter: untyped interface type parameter causes "panic: nil underlying" during testing Dec 5, 2022

gopherbot closed this as completed in a398963 Dec 7, 2022

golang locked and limited conversation to collaborators Dec 8, 2023

gopherbot added the FrozenDueToAge label Dec 8, 2023

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go/internal/gcimporter: untyped interface type parameter causes "panic: nil underlying" during testing #57015

go/internal/gcimporter: untyped interface type parameter causes "panic: nil underlying" during testing #57015

csgura commented Dec 1, 2022

cuonglm commented Dec 1, 2022

toothrot commented Dec 1, 2022

csgura commented Dec 2, 2022

randall77 commented Dec 5, 2022

findleyr commented Dec 5, 2022

findleyr commented Dec 5, 2022

randall77 commented Dec 5, 2022

findleyr commented Dec 5, 2022

heschi commented Dec 5, 2022

findleyr commented Dec 5, 2022

randall77 commented Dec 5, 2022

findleyr commented Dec 5, 2022

findleyr commented Dec 5, 2022

gopherbot commented Dec 6, 2022

gopherbot commented Dec 8, 2022

go/internal/gcimporter: untyped interface type parameter causes "panic: nil underlying" during testing #57015

go/internal/gcimporter: untyped interface type parameter causes "panic: nil underlying" during testing #57015

Comments

csgura commented Dec 1, 2022

What version of Go are you using (go version)?

Does this issue reproduce with the latest release?

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

What did you do?

What did you expect to see?

What did you see instead?

cuonglm commented Dec 1, 2022

toothrot commented Dec 1, 2022

csgura commented Dec 2, 2022

randall77 commented Dec 5, 2022

findleyr commented Dec 5, 2022

findleyr commented Dec 5, 2022

randall77 commented Dec 5, 2022

findleyr commented Dec 5, 2022

heschi commented Dec 5, 2022

findleyr commented Dec 5, 2022

randall77 commented Dec 5, 2022

findleyr commented Dec 5, 2022

findleyr commented Dec 5, 2022

gopherbot commented Dec 6, 2022

gopherbot commented Dec 8, 2022

What version of Go are you using (`go version`)?

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