testenv.MustHaveGoBuild(t)

	t.Parallel()

	goEnv := func(arg string) string {
		cmd := testenv.Command(t, testenv.GoToolPath(t), "env", arg)
		cmd.Stderr = new(bytes.Buffer)

		line, err := cmd.Output()
		if err != nil {
			t.Fatalf("%v: %v\n%s", cmd, err, cmd.Stderr)
		}
		out := string(bytes.TrimSpace(line))
		t.Logf("%v: %q", cmd, out)
		return out
	}

	cc := goEnv("CC")
	cgoCflags := goEnv("CGO_CFLAGS")

	cmd = exec.Command(goTool, "list", "-f", "{{.Target}}", "cmd/go")
	cmd.Stderr = os.Stderr
	out, err = cmd.Output()
	if err != nil {
		return fmt.Errorf("%v: %w", cmd, err)
	}
	platformBin := filepath.Dir(string(bytes.TrimSpace(out)))
	if platformBin == "." {
		return errors.New("failed to locate cmd/go for target platform")
	}

			start = i
		}
	}

	if cmd.name == "" {
		if cmd.want != "" || len(cmd.conds) > 0 || len(cmd.rawArgs) > 0 || cmd.background {
			// The line contains a command prefix or suffix, but no actual command.
			return nil, errors.New("missing command")
		}

		// The line is blank, or contains only a comment.
		return nil, nil
	}

	if n := len(cmd.rawArgs); n > 0 {
		last := cmd.rawArgs[n-1]

import "runtime"

// SysvShmCtl performs control operations on the shared memory segment
// specified by id.
func SysvShmCtl(id, cmd int, desc *SysvShmDesc) (result int, err error) {
	if runtime.GOARCH == "arm" ||
		runtime.GOARCH == "mips64" || runtime.GOARCH == "mips64le" {
		cmd |= ipc_64
	}

	return shmctl(id, cmd, desc)

func (r *vcsRepo) loadBranches(ctx context.Context) {
	if r.cmd.branches == nil {
		return
	}

	out, err := Run(ctx, r.dir, r.cmd.branches(r.remote))
	if err != nil {
		return
	}

	r.branches = make(map[string]bool)
	for _, branch := range r.cmd.branchRE.FindAllString(string(out), -1) {
		if r.cmd.badLocalRevRE != nil && r.cmd.badLocalRevRE.MatchString(branch) {
			continue
		}
		r.branches[branch] = true
	}
}

// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package test

import (
	"cmd/go/internal/cfg"
	"cmd/go/internal/test/internal/genflags"
	"internal/testenv"
	"maps"
	"os"
	"testing"
)

func TestMain(m *testing.M) {
	cfg.SetGOROOT(testenv.GOROOT(nil), false)
	os.Exit(m.Run())
}

		t.Fatal(err)
	}

	for _, fp := range filePrefixes {
		cmd := exec.Command("go", "tool", "cgo",
			"-godefs",
			"-srcdir", testdata,
			"-objdir", dir,
			fp+".go")
		cmd.Stderr = new(bytes.Buffer)

		out, err := cmd.Output()
		if err != nil {
			t.Fatalf("%s: %v\n%s", strings.Join(cmd.Args, " "), err, cmd.Stderr)
		}

		fn := fp + "_defs.go"

			}

			dstBin := dir.Join(name)
			cmd, err := cc(config.cFlags...)
			if err != nil {
				t.Fatal(err)
			}
			cmd.Args = append(cmd.Args, config.ldFlags...)
			cmd.Args = append(cmd.Args, "-o", dstBin, cSrc, lib)
			mustRun(t, cmd)

			cmd = hangProneCmd(dstBin)
			replaceEnv(cmd, "LD_LIBRARY_PATH", ".")
			mustRun(t, cmd)
		})
	}

	// init-time configuration
	cmd := testenv.Command(t, testGo, "help", "documentation")
	// Unset GO111MODULE so that the 'go get' section matches
	// the default 'go get' implementation.
	cmd.Env = append(cmd.Environ(), "GO111MODULE=")
	cmd.Stderr = new(strings.Builder)
	out, err := cmd.Output()
	if err != nil {
		t.Fatalf("%v: %v\n%s", cmd, err, cmd.Stderr)
	}

	alldocs, err := format.Source(out)

	}
	t.Parallel()

	testenv.MustHaveGoBuild(t)
	testenv.MustHaveCGO(t)
	dir := t.TempDir()
	cmd := testenv.Command(t, testenv.GoToolPath(t), "build", "-gcflags=-N -l", "-o", filepath.Join(dir, "a.out"))
	cmd.Dir = filepath.Join(testenv.GOROOT(t), "src", "runtime", "testdata", "testprogcgo")
	out, err := cmd.CombinedOutput()
	if err != nil {
		t.Logf("go build output: %s", out)
		t.Fatal(err)
	}