pkg syscall (netbsd-386), type Credential struct, NoSetGroups bool
pkg syscall (netbsd-amd64-cgo), type Credential struct, NoSetGroups bool
pkg syscall (netbsd-amd64), type Credential struct, NoSetGroups bool
pkg syscall (netbsd-arm-cgo), type Credential struct, NoSetGroups bool
pkg syscall (netbsd-arm), type Credential struct, NoSetGroups bool

		t.Fatalf("error converting Gid=%s to integer: %v", u.Gid, err)
	}

	// If NoSetGroups is true, setgroups isn't called and cmd.Run should succeed
	cmd := helperCommand(t, "echo", "foo")
	cmd.SysProcAttr = &syscall.SysProcAttr{
		Credential: &syscall.Credential{
			Uid:         uint32(uid),
			Gid:         uint32(gid),
			NoSetGroups: true,
		},
	}

	if err = cmd.Run(); err != nil {

	// User and groups
	if cred = sys.Credential; cred != nil {
		ngroups = uintptr(len(cred.Groups))
		groups = uintptr(0)
		if ngroups > 0 {
			groups = uintptr(unsafe.Pointer(&cred.Groups[0]))
		}
		if !cred.NoSetGroups {
			_, _, err1 = RawSyscall(SYS_SETGROUPS, ngroups, groups, 0)
			if err1 != 0 {
				goto childerror
			}
		}
		_, _, err1 = RawSyscall(SYS_SETGID, uintptr(cred.Gid), 0, 0)
		if err1 != 0 {

	// User and groups
	if cred = sys.Credential; cred != nil {
		ngroups = uintptr(len(cred.Groups))
		groups = uintptr(0)
		if ngroups > 0 {
			groups = uintptr(unsafe.Pointer(&cred.Groups[0]))
		}
		if !cred.NoSetGroups {
			err1 = setgroups1(ngroups, groups)
			if err1 != 0 {
				goto childerror
			}
		}
		err1 = setgid(uintptr(cred.Gid))
		if err1 != 0 {
			goto childerror
		}

	// User and groups
	if cred = sys.Credential; cred != nil {
		ngroups = uintptr(len(cred.Groups))
		groups = uintptr(0)
		if ngroups > 0 {
			groups = uintptr(unsafe.Pointer(&cred.Groups[0]))
		}
		if !cred.NoSetGroups {
			_, _, err1 = RawSyscall(SYS_SETGROUPS, ngroups, groups, 0)
			if err1 != 0 {
				goto childerror
			}
		}
		_, _, err1 = RawSyscall(SYS_SETGID, uintptr(cred.Gid), 0, 0)
		if err1 != 0 {

	// User and groups
	if cred = sys.Credential; cred != nil {
		ngroups = uintptr(len(cred.Groups))
		groups = uintptr(0)
		if ngroups > 0 {
			groups = uintptr(unsafe.Pointer(&cred.Groups[0]))
		}
		if !cred.NoSetGroups {
			_, _, err1 = rawSyscall(abi.FuncPCABI0(libc_setgroups_trampoline), ngroups, groups, 0)
			if err1 != 0 {
				goto childerror
			}
		}

// by a child process started by [StartProcess].
type Credential struct {
	Uid         uint32   // User ID.
	Gid         uint32   // Group ID.
	Groups      []uint32 // Supplementary group IDs.
	NoSetGroups bool     // If true, don't set supplementary groups
}

// ProcAttr holds attributes that will be applied to a new process started
// by [StartProcess].
type ProcAttr struct {

		groups = uintptr(0)
		if ngroups > 0 {
			groups = uintptr(unsafe.Pointer(&cred.Groups[0]))
		}
		if !(sys.GidMappings != nil && !sys.GidMappingsEnableSetgroups && ngroups == 0) && !cred.NoSetGroups {
			_, _, err1 = RawSyscall(_SYS_setgroups, ngroups, groups, 0)
			if err1 != 0 {
				goto childerror
			}
		}
		_, _, err1 = RawSyscall(sys_SETGID, uintptr(cred.Gid), 0, 0)
		if err1 != 0 {

pkg syscall (netbsd-arm64-cgo), type Credential struct, Gid uint32
pkg syscall (netbsd-arm64-cgo), type Credential struct, Groups []uint32
pkg syscall (netbsd-arm64-cgo), type Credential struct, NoSetGroups bool
pkg syscall (netbsd-arm64-cgo), type Credential struct, Uid uint32
pkg syscall (netbsd-arm64-cgo), type Dirent struct
pkg syscall (netbsd-arm64-cgo), type Dirent struct, Fileno uint64

pkg syscall (freebsd-arm64), type Credential struct, Gid uint32
pkg syscall (freebsd-arm64), type Credential struct, Groups []uint32
pkg syscall (freebsd-arm64), type Credential struct, NoSetGroups bool
pkg syscall (freebsd-arm64), type Credential struct, Uid uint32
pkg syscall (freebsd-arm64), type Dirent struct
pkg syscall (freebsd-arm64), type Dirent struct, Fileno uint64