Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

cmd/compile: internal compiler error: cannot export DYNAMICDOTTYPE (154) node #49027

Closed
a97077088 opened this issue Oct 18, 2021 · 2 comments
Closed
Assignees
Milestone

Comments

@a97077088
Copy link

@a97077088 a97077088 commented Oct 18, 2021

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

$ go version

go version devel go1.18-cf51fb5d68 Sun Oct 17 04:27:13 2021 +0000 windows/amd64

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
C:\Users\pouk\go\src\awesomeProject>go env
set GO111MODULE=on
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\pouk\AppData\Local\go-build
set GOENV=C:\Users\pouk\AppData\Roaming\go\env
set GOEXE=.exe
set GOEXPERIMENT=
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMODCACHE=C:\Users\pouk\go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:\Users\pouk\go
set GOPRIVATE=
set GOPROXY=https://proxy.golang.org,direct
set GOROOT=C:\Users\pouk\.go\current
set GOSUMDB=sum.golang.org
set GOTMPDIR=
set GOTOOLDIR=C:\Users\pouk\.go\current\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=devel go1.18-cf51fb5d68 Sun Oct 17 04:27:13 2021 +0000
set GCCGO=gccgo
set GOAMD64=v1
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=C:\Users\pouk\go\src\awesomeProject\go.mod
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\pouk\AppData\Local\Temp\go-build4143047649=/tmp/go-build -gno-record-gcc-switches

What did you do?

package main

import (
	"fmt"
)

func Check2ToString1(v interface{}) string {
	return CheckTo[string](v)
}
func CheckTo[T any](v interface{}) T {
	var o T
	if v == nil {
		return o
	}
	return v.(T)
}
func main() {
	fmt.Println(Check2ToString1("11"))
}

What did you expect to see?

11

What did you see instead?

# awesomeProject
.\main.go:15:2: internal compiler error: cannot export DYNAMICDOTTYPE (154) node
	==> please file an issue and assign to gri@

goroutine 1 [running]:
runtime/debug.Stack()
	C:/Users/pouk/.go/gotip/src/runtime/debug/stack.go:24 +0x65
cmd/compile/internal/base.FatalfAt({0x18086a8, 0x0}, {0x16cd174, 0x47}, {0xc0000cd5e0, 0x2, 0x2})
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/base/print.go:227 +0x1ca
cmd/compile/internal/base.Fatalf(...)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/base/print.go:196
cmd/compile/internal/typecheck.(*exportWriter).expr(0xc00063b260, {0x18086a8, 0xc0005e0060})
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:2132 +0x1aff
cmd/compile/internal/typecheck.(*exportWriter).exprList(0xc00063b260, {0xc0005d20f0, 0x1, 0xc000430fc0})
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:1681 +0x76
cmd/compile/internal/typecheck.(*exportWriter).stmt(0xc00063b260, {0x1809a30, 0xc0005dc0f0})
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:1574 +0x91f
cmd/compile/internal/typecheck.(*exportWriter).node(0xc00060bc50, {0x1809a30, 0xc0005dc0f0})
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:1483 +0x65
cmd/compile/internal/typecheck.(*exportWriter).stmtList(0xc00063b260, {0xc0005d0040, 0x4, 0x16760c0})
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:1476 +0x76
cmd/compile/internal/typecheck.(*exportWriter).funcBody(0xc00063b260, 0xc00006e840)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:1471 +0x5b
cmd/compile/internal/typecheck.(*iexporter).doInline(0xc000638370, 0xc000428f70)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:662 +0xc5
cmd/compile/internal/typecheck.(*exportWriter).funcExt(0xc00063b1f0, 0xc000428f70)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:1408 +0x1b6
cmd/compile/internal/typecheck.(*iexporter).doDecl(0xc000638370, 0xc000428f70)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:533 +0x21e
cmd/compile/internal/typecheck.WriteExports({0x1802640, 0xc00060ba40}, 0x1)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/typecheck/iexport.go:331 +0x2e5
cmd/compile/internal/noder.WriteExports(0xc00062a600)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/noder/export.go:40 +0x7a
cmd/compile/internal/gc.dumpCompilerObj(0xc00062a600)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/gc/obj.go:107 +0x28
cmd/compile/internal/gc.dumpobj1({0xc0000c4100, 0x3f}, 0x3)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/gc/obj.go:63 +0x17b
cmd/compile/internal/gc.dumpobj()
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/gc/obj.go:44 +0x36
cmd/compile/internal/gc.Main(0x16d4b50)
	C:/Users/pouk/.go/gotip/src/cmd/compile/internal/gc/main.go:334 +0x1136
main.main()
	C:/Users/pouk/.go/gotip/src/cmd/compile/main.go:55 +0xdd


Compilation finished with exit code 2

If you have the code below then it will run normally,I do not know why----------------------------》

package main

import (
	"fmt"
	"reflect"
)

func Check2ToString1(v interface{}) string {
	return CheckTo[string](v)
}
func CheckTo[T any](v interface{}) T {
	var o T
	if v == nil {
		return o
	}
	iv := reflect.ValueOf(v)
	_ = iv
	return v.(T)
}
func main() {
	fmt.Println(Check2ToString1("11"))
}
@ALTree ALTree changed the title internal compiler error: cannot export DYNAMICDOTTYPE (154) node ==> please file an issue and assign to gri@ cmd/compile: internal compiler error: cannot export DYNAMICDOTTYPE (154) node Oct 18, 2021
@ALTree ALTree added this to the Go1.18 milestone Oct 18, 2021
@ALTree
Copy link
Member

@ALTree ALTree commented Oct 18, 2021

Loading

@randall77 randall77 self-assigned this Oct 18, 2021
@gopherbot
Copy link

@gopherbot gopherbot commented Oct 18, 2021

Change https://golang.org/cl/356569 mentions this issue: cmd/compile: allow importing and exporting of ODYANMICDOTTYPE[2]

Loading

@gopherbot gopherbot closed this in 394a1ad Oct 18, 2021
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
Linked pull requests

Successfully merging a pull request may close this issue.

None yet
4 participants