}

func splitList(path string) []string {
	if path == "" {
		return []string{}
	}
	return strings.Split(path, string(ListSeparator))
}

func abs(path string) (string, error) {
	return unixAbs(path)
}

func join(elem []string) string {
	// If there's a bug here, fix the logic in ./path_unix.go too.
	for i, e := range elem {
		if e != "" {
			return Clean(strings.Join(elem[i:], string(Separator)))
		}

}

func splitList(path string) []string {
	if path == "" {
		return []string{}
	}
	return strings.Split(path, string(ListSeparator))
}

func abs(path string) (string, error) {
	return unixAbs(path)
}

func join(elem []string) string {
	// If there's a bug here, fix the logic in ./path_plan9.go too.
	for i, e := range elem {
		if e != "" {
			return Clean(strings.Join(elem[i:], string(Separator)))
		}

// path name for a given file is not guaranteed to be unique.
// Abs calls [Clean] on the result.
func Abs(path string) (string, error) {
	return abs(path)
}

func unixAbs(path string) (string, error) {
	if IsAbs(path) {
		return Clean(path), nil
	}
	wd, err := os.Getwd()
	if err != nil {
		return "", err
	}
	return Join(wd, path), nil
}

	"openbsd":   true,
	"plan9":     true,
	"solaris":   true,
	"wasip1":    true,
	"windows":   true,
	"zos":       true,
}

// unixOS is the set of GOOS values matched by the "unix" build tag.
// This is not used for filename matching.
// This list also appears in cmd/dist/build.go.
var unixOS = map[string]bool{
	"aix":       true,
	"android":   true,
	"darwin":    true,
	"dragonfly": true,
	"freebsd":   true,

	"plan9":     true,
	"solaris":   true,
	"wasip1":    true,
	"windows":   true,
	"zos":       true,
}

// unixOS is the set of GOOS values matched by the "unix" build tag.
// This is not used for filename matching.
// This list also appears in cmd/dist/build.go and
// cmd/go/internal/imports/build.go.
var unixOS = map[string]bool{
	"aix":       true,
	"android":   true,
	"darwin":    true,
	"dragonfly": true,

		// another program, we don't want to mess around with the file
		// descriptors.
		return
	}

	const (
		// F_GETFD, EBADF, O_RDWR are standard across all unixes we support, so
		// we define them here rather than in each of the OS specific files.
		F_GETFD = 0x01
		EBADF   = 0x09
		O_RDWR  = 0x02
	)

	devNull := []byte("/dev/null\x00")
	for i := 0; i < 3; i++ {

	"plan9":     true,
	"solaris":   true,
	"wasip1":    true,
	"windows":   true,
	"zos":       true,
}

// unixOS is the set of GOOS values matched by the "unix" build tag.
// This is not used for filename matching.
// This is the same list as in go/build/syslist.go and cmd/dist/build.go.
var unixOS = map[string]bool{
	"aix":       true,
	"android":   true,
	"darwin":    true,
	"dragonfly": true,
	"freebsd":   true,

// Copyright 2018 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.

// TODO: This test could be implemented on all (most?) UNIXes if we
// added syscall.Tgkill more widely.

// We skip all of these tests under race mode because our test thread
// spends all of its time in the race runtime, which isn't a safe
// point.

func packagefile(pkg string) string {
	return pathf("%s/pkg/obj/go-bootstrap/%s_%s/%s.a", goroot, goos, goarch, pkg)
}

// unixOS is the set of GOOS values matched by the "unix" build tag.
// This is the same list as in go/build/syslist.go and
// cmd/go/internal/imports/build.go.
var unixOS = map[string]bool{
	"aix":       true,
	"android":   true,
	"darwin":    true,
	"dragonfly": true,
	"freebsd":   true,

		return true
	}
	if ctxt.GOOS == "illumos" && name == "solaris" {
		return true
	}
	if ctxt.GOOS == "ios" && name == "darwin" {
		return true
	}
	if name == "unix" && unixOS[ctxt.GOOS] {
		return true
	}
	if name == "boringcrypto" {
		name = "goexperiment.boringcrypto" // boringcrypto is an old name for goexperiment.boringcrypto
	}

	// other tags