go compiler

[nabetani]

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

$ go version
go version go1.18.4 darwin/arm64

Does this issue reproduce with the latest release?

1.18.1〜1.18.3: no problem
1.18.4: compiler says internal compiler error: assertion failed

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

go env Output

$ go env
GO111MODULE=""
GOARCH="arm64"
GOBIN=""
GOCACHE="/Users/XXXX/Library/Caches/go-build"
GOENV="/Users/XXXX/Library/Application Support/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="arm64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/XXXX/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/XXXX/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/opt/homebrew/Cellar/go/1.18.4/libexec"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/opt/homebrew/Cellar/go/1.18.4/libexec/pkg/tool/darwin_arm64"
GOVCS=""
GOVERSION="go1.18.4"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/XXXX/github/nabetani/killgo/go.mod"
GOWORK=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/8x/qzrby60s6y9b_tfc5qgrkmn00000gn/T/go-build940903455=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

I ran following code.

package main

import "log"

type Obj interface{ Hoge() string }
type objType struct{}

func Send[T Obj](obj T) {
	func() { obj.Hoge() }()
}

func foo(o Obj) { Send(o) }

func (o *objType) Hoge() string {
	log.Println("objType.Hoge")
	return "objType.Hoge"
}

func main() { foo(&objType{}) }

I expected following:

$ go run main.go
2022/07/30 20:08:42 objType.Hoge

What did you see instead?

I got following:

$ go run main.go
# command-line-arguments
./main.go:9:19: internal compiler error: assertion failed

Please file a bug report including a short program that triggers the error.
https://go.dev/issue/new

I tried other versions:

$ go1.18.1 run main.go 
2022/07/30 20:12:04 objType.Hoge
$ go1.18.2 run main.go
2022/07/30 20:12:07 objType.Hoge
$ go1.18.3 run main.go
2022/07/30 20:12:10 objType.Hoge
$ go1.18.4 run main.go
# command-line-arguments
./main.go:9:19: internal compiler error: assertion failed

Please file a bug report including a short program that triggers the error.
https://go.dev/issue/new

[cuiweixie]

go version devel go1.19-9a2001a8cc Fri Jul 29 22:09:32 2022 +0000 darwin/arm64
the master seems to be ok!

[seankhliao]

Duplicate of #53762