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cmd: fix a bunch of linter warnings from GoLand #3550

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Nov 3, 2023
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22 changes: 11 additions & 11 deletions cmd/dlv/cmds/commands.go
Original file line number Diff line number Diff line change
Expand Up @@ -120,7 +120,7 @@ func New(docCall bool) *cobra.Command {
conf, loadConfErr = config.LoadConfig()
// Delay reporting errors about configuration loading delayed until after the
// server is started so that the "server listening at" message is always
// the first thing emitted. Also logflags hasn't been setup yet at this point.
// the first thing emitted. Also, logflags hasn't been set up yet at this point.
buildFlagsDefault := ""
if runtime.GOOS == "windows" {
ver, _ := goversion.Installed()
Expand Down Expand Up @@ -501,7 +501,7 @@ func dapCmd(cmd *cobra.Command, args []string) {
}

disconnectChan := make(chan struct{})
config := &service.Config{
cfg := &service.Config{
DisconnectChan: disconnectChan,
Debugger: debugger.Config{
Backend: backend,
Expand All @@ -519,7 +519,7 @@ func dapCmd(cmd *cobra.Command, args []string) {
fmt.Printf("couldn't start listener: %s\n", err)
return 1
}
config.Listener = listener
cfg.Listener = listener
} else { // with a predetermined client.
var err error
conn, err = net.Dial("tcp", dapClientAddr)
Expand All @@ -529,7 +529,7 @@ func dapCmd(cmd *cobra.Command, args []string) {
}
}

server := dap.NewServer(config)
server := dap.NewServer(cfg)
defer server.Stop()
if conn == nil {
server.Run()
Expand Down Expand Up @@ -838,7 +838,7 @@ func getPackageDir(pkg []string) string {
return listout.Dir
}

func attachCmd(cmd *cobra.Command, args []string) {
func attachCmd(_ *cobra.Command, args []string) {
var pid int
if len(args) > 0 {
var err error
Expand All @@ -852,11 +852,11 @@ func attachCmd(cmd *cobra.Command, args []string) {
os.Exit(execute(pid, args, conf, "", debugger.ExecutingOther, args, buildFlags))
}

func coreCmd(cmd *cobra.Command, args []string) {
func coreCmd(_ *cobra.Command, args []string) {
os.Exit(execute(0, []string{args[0]}, conf, args[1], debugger.ExecutingOther, args, buildFlags))
}

func connectCmd(cmd *cobra.Command, args []string) {
func connectCmd(_ *cobra.Command, args []string) {
if err := logflags.Setup(log, logOutput, logDest); err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
Expand All @@ -871,7 +871,7 @@ func connectCmd(cmd *cobra.Command, args []string) {
logflags.Close()
os.Exit(1)
}
ec := connect(addr, nil, conf, debugger.ExecutingOther)
ec := connect(addr, nil, conf)
logflags.Close()
os.Exit(ec)
}
Expand Down Expand Up @@ -909,7 +909,7 @@ func splitArgs(cmd *cobra.Command, args []string) ([]string, []string) {
return args, []string{}
}

func connect(addr string, clientConn net.Conn, conf *config.Config, kind debugger.ExecuteKind) int {
func connect(addr string, clientConn net.Conn, conf *config.Config) int {
// Create and start a terminal - attach to running instance
var client *rpc2.RPCClient
if clientConn != nil {
Expand Down Expand Up @@ -1058,7 +1058,7 @@ func execute(attachPid int, processArgs []string, conf *config.Config, coreFile
}

if err := server.Run(); err != nil {
if err == api.ErrNotExecutable {
if errors.Is(err, api.ErrNotExecutable) {
switch kind {
case debugger.ExecutingGeneratedFile:
fmt.Fprintln(os.Stderr, "Can not debug non-main package")
Expand Down Expand Up @@ -1089,7 +1089,7 @@ func execute(attachPid int, processArgs []string, conf *config.Config, coreFile
return status
}

return connect(listener.Addr().String(), clientConn, conf, kind)
return connect(listener.Addr().String(), clientConn, conf)
}

func parseRedirects(redirects []string) ([3]string, error) {
Expand Down
4 changes: 2 additions & 2 deletions cmd/dlv/cmds/helphelpers/help.go
Original file line number Diff line number Diff line change
Expand Up @@ -6,10 +6,10 @@ import (
)

// Prepare prepares cmd flag set for the invocation of its usage function by
// hiding flags that we want cobra to parse but we don't want to show to the
// hiding flags that we want cobra to parse, but we don't want to show to the
// user.
// We do this because not all flags associated with the root command are
// valid for all subcommands but we don't want to move them out of the root
// valid for all subcommands, but we don't want to move them out of the root
// command and into subcommands, since that would change how cobra parses
// the command line.
//
Expand Down
14 changes: 7 additions & 7 deletions cmd/dlv/dlv_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -180,17 +180,17 @@ func testOutput(t *testing.T, dlvbin, output string, delveCmds []string) (stdout

// ignore "dlv debug" command error, it returns
// errors even after successful debug session.
cmd.Wait()
_ = cmd.Wait()
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stdout, stderr = stdoutBuf.Bytes(), stderrBuf.Bytes()

_, err = os.Stat(debugbin)
if err == nil {
// Sometimes delve on Windows can't remove the built binary before
// exiting and gets an "Access is denied" error when trying.
// See: https://travis-ci.com/go-delve/delve/jobs/296325131)
// See: https://travis-ci.com/go-delve/delve/jobs/296325131.
// We have added a delay to gobuild.Remove, but to avoid any test
// flakiness, we guard against this failure here as well.
if runtime.GOOS != "windows" || !strings.Contains(err.Error(), "Access is denied") {
if runtime.GOOS != "windows" {
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But we do want to complain for errors other than access is denied.

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The enclosing branch checks that err == nil.

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Ah ok, you are right.

t.Errorf("running %q: file %v was not deleted\nstdout is %q, stderr is %q", delveCmds, debugbin, stdout, stderr)
}
return
Expand All @@ -204,7 +204,7 @@ func testOutput(t *testing.T, dlvbin, output string, delveCmds []string) (stdout

func getDlvBin(t *testing.T) string {
// In case this was set in the environment
// from getDlvBinEBPF lets clear it here so
// from getDlvBinEBPF lets clear it here, so
// we can ensure we don't get build errors
// depending on the test ordering.
t.Setenv("CGO_LDFLAGS", ldFlags)
Expand Down Expand Up @@ -427,7 +427,7 @@ func TestExitInInit(t *testing.T) {
cmd.Dir = buildtestdir
out, err := cmd.CombinedOutput()
t.Logf("%q %v\n", string(out), err)
// dlv will exit anyway because stdin is not a tty but it will print the
// dlv will exit anyway because stdin is not a tty, but it will print the
// prompt once if the init file didn't call exit successfully.
if strings.Contains(string(out), "(dlv)") {
t.Fatal("init did not cause dlv to exit")
Expand Down Expand Up @@ -1352,8 +1352,8 @@ func TestDefaultBinary(t *testing.T) {
fmt.Fprintf(stdin1, "continue\nquit\n")
fmt.Fprintf(stdin2, "continue\nquit\n")

wait1()
wait2()
_ = wait1()
_ = wait2()

out1, out2 := stdoutBuf1.String(), stdoutBuf2.String()
t.Logf("%q", out1)
Expand Down
9 changes: 7 additions & 2 deletions cmd/dlv/main.go
Original file line number Diff line number Diff line change
Expand Up @@ -15,11 +15,16 @@ func main() {
if Build != "" {
version.DelveVersion.Build = Build
}

const cgoCflagsEnv = "CGO_CFLAGS"
if os.Getenv(cgoCflagsEnv) == "" {
os.Setenv(cgoCflagsEnv, "-O0 -g")
err := os.Setenv(cgoCflagsEnv, "-O0 -g")
if err != nil {
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logrus.WithFields(logrus.Fields{"layer": "dlv"}).Warnf("CGO_CFLAGS could not be set, Cgo code could be optimized: %v", err)
}
} else {
logrus.WithFields(logrus.Fields{"layer": "dlv"}).Warnln("CGO_CFLAGS already set, Cgo code could be optimized.")
}
cmds.New(false).Execute()

_ = cmds.New(false).Execute()
}