Golang fmt: unintentionally print "exit status 0x40010004"

Go version

go version go1.24.2 windows/amd64

Output of go env in your module/workspace:

set AR=ar
set CC=gcc
set CGO_CFLAGS=-IC:/msys64/mingw64/include -w
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-O2 -g
set CGO_ENABLED=1
set CGO_FFLAGS=-O2 -g
set CGO_LDFLAGS=-O2 -g
set CXX=g++
set GCCGO=gccgo
set GO111MODULE=
set GOAMD64=v1
set GOARCH=amd64
set GOAUTH=netrc
set GOBIN=
set GOCACHE=C:\Users\46805\AppData\Local\go-build
set GOCACHEPROG=
set GODEBUG=
set GOENV=C:\Users\46805\AppData\Roaming\go\env
set GOEXE=.exe
set GOEXPERIMENT=
set GOFIPS140=off
set GOFLAGS=
set GOGCCFLAGS=-m64 -mthreads -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=C:\Users\46805\AppData\Local\Temp\go-build412725265=/tmp/go-build -gno-record-gcc-switches
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMOD=C:\Users\46805\code\office_act\go.mod
set GOMODCACHE=C:\Users\46805\go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:\Users\46805\go
set GOPRIVATE=
set GOPROXY=https://goproxy.cn
set GOROOT=C:\Program Files\Go
set GOSUMDB=sum.golang.org
set GOTELEMETRY=local
set GOTELEMETRYDIR=C:\Users\46805\AppData\Roaming\go\telemetry
set GOTMPDIR=
set GOTOOLCHAIN=auto
set GOTOOLDIR=C:\Program Files\Go\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=go1.24.2
set GOWORK=
set PKG_CONFIG=pkg-config

What did you do?

package main

import (
    "fmt"
    "log"
    "net/http"
    "os/exec"
)

func main() {
    log.Println("")
    _ = exec.Command("pwd")                // the command to run is irrelevant
    _, _ = http.Get("https://example.com") // the url to request is irrelevant
    fmt.Scanln()
}

go run main.go Note: Deleting any part of the main function would eliminate the problem.

What did you see happen?

2025/08/06 13:09:57 exit status 0x40010004

What did you expect to see?

no exit status printed

Comment From: typenoob

Not sure which module the issue belongs to. The title could be changed by someone.

Comment From: gabyhelp

Related Issues

• Command `go run` #57108 (closed)
• runtime: windows 10 amd64 1.22.0 goroutine output "exit status 0x40010004" #69014 (closed)
• Compilation finished with exit code 2 for go 1.18.1 #53950 (closed)
• os/exec: go fmt fails inside docker container #34318 (closed)

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