cmd/compile: global variable assignment implicit type conversion error #68264
Description
Go version
go1.22.4 darwin/amd64
Output of go env in your module/workspace:
GO111MODULE=''
GOARCH='amd64'
GOBIN=''
GOCACHE='/Users/dylan/Library/Caches/go-build'
GOENV='/Users/dylan/Library/Application Support/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='darwin'
GOINSECURE=''
GOMODCACHE='/Users/dylan/go/pkg/mod'
GONOPROXY='github.com/deelawn'
GONOSUMDB='github.com/deelawn'
GOOS='darwin'
GOPATH='/Users/dylan/go'
GOPRIVATE='github.com/deelawn'
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/darwin_amd64'
GOVCS=''
GOVERSION='go1.22.4'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='clang'
CXX='clang++'
CGO_ENABLED='1'
GOMOD='/Users/dylan/deelawn/gnoland/gno2/gno/go.mod'
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 x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/6v/ptrk49k16l32ftg2l8x0q8j40000gn/T/go-build4157790115=/tmp/go-build -gno-record-gcc-switches -fno-common'What did you do?
https://go.dev/play/p/AwgUrKVlv9_Z
package main
import "fmt"
type nat []int
var a, b nat = y()
func y() (nat, []int) {
return nat{0}, nat{1}
}
func main() {
fmt.Println(a, b)
}What did you see happen?
./prog.go:7:5: internal compiler error: unexpected initialization statement: a, b = .autotmp_0, .autotmp_1
Please file a bug report including a short program that triggers the error.
https://go.dev/issue/new
What did you expect to see?
Expected output of [0] [1], identical to what is output when doing the same assignment to local variables:
package main
import "fmt"
type nat []int
func y() (nat, []int) {
return nat{0}, nat{1}
}
func main() {
var a, b nat = y()
fmt.Println(a, b)
}