if err := groupRetry(u.Username, nameC, userGID, &gidsC, &n); err != nil {
			return nil, err
		}
	}
	gidsC = gidsC[:n]
	gids := make([]string, 0, n)
	for _, g := range gidsC[:n] {
		gids = append(gids, strconv.Itoa(int(g)))
	}
	return gids, nil
}

// groupRetry retries getGroupList with much larger size for n. The result is
// stored in gids.

	{in: testGroupFile, user: "user777", gid: "7", gids: []string{"7", "777", "1000"}},
	{in: testGroupFile, user: "user1111", gid: "1111", gids: []string{"1111", "1000"}},
	{in: testGroupFile, user: "user1000", gid: "1000", gids: []string{"1000"}},
	{in: testGroupFile, user: "user7500", gid: "7500", gids: []string{"1000", "7500"}},
	{in: testGroupFile, user: "no-such-user", gid: "2345", gids: []string{"2345"}},

//go:build !osusergo && darwin

package user

import (
	"internal/syscall/unix"
)

func getGroupList(name *_C_char, userGID _C_gid_t, gids *_C_gid_t, n *_C_int) _C_int {
	err := unix.Getgrouplist(name, userGID, gids, n)
	if err != nil {
		return -1
	}
	return 0

	return getgrouplist(user, group, groups, ngroups);
}
*/
import "C"

func getGroupList(name *_C_char, userGID _C_gid_t, gids *_C_gid_t, n *_C_int) _C_int {
	return C.mygetgrouplist(name, userGID, gids, n)

		} else {
			t.Skipf("skipping: %v", err)
		}
	}

	gids, err := user.GroupIds()
	if err != nil {
		t.Fatalf("%+v.GroupIds(): %v", user, err)
	}
	if !containsID(gids, user.Gid) {
		t.Errorf("%+v.GroupIds() = %v; does not contain user GID %s", user, gids, user.Gid)
	}
}

func containsID(ids []string, id string) bool {
	for _, x := range ids {
		if x == id {
			return true
		}
	}
	return false

func libc_getgrouplist_trampoline()

func Getgrouplist(name *byte, gid uint32, gids *uint32, n *int32) error {
	_, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_getgrouplist_trampoline),
		uintptr(unsafe.Pointer(name)), uintptr(gid), uintptr(unsafe.Pointer(gids)),
		uintptr(unsafe.Pointer(n)), 0, 0)
	if errno != 0 {
		return errno
	}
	return nil
}

const (

func Getegid() int { return syscall.Getegid() }

// Getgroups returns a list of the numeric ids of groups that the caller belongs to.
//
// On Windows, it returns [syscall.EWINDOWS]. See the [os/user] package
// for a possible alternative.
func Getgroups() ([]int, error) {
	gids, e := syscall.Getgroups()
	return gids, NewSyscallError("getgroups", e)
}

// Exit causes the current program to exit with the given status code.

    }

    /**
     * This method is used to generate stable GIDs and must be stable for identical contents.
     * Returning a constant value is ok but will make the generated project order-dependent.
     */
    public int stableHash() {
        return 0;
    }

    @Override
    public String toString() {
        return String.format("%s isa=%s gid=%s", super.toString(), isa(), getGlobalID());
    }

    /**

    }

    /**
     * Generate a stable GID based on the class name and hash of some object info.
     *
     * GIDs generated this way will be in the form of
     * {@code <class-name-hash-32> <obj-hash-32> <counter-32>}
     */
    public String generateGid(String pbxClassName, int hash) {
        int counter = 0;
        String gid;
        do {

	return nil
}

func Getpagesize() int { return 0x1000 }

func Getegid() (egid int) { return -1 }
func Geteuid() (euid int) { return -1 }
func Getgid() (gid int)   { return -1 }
func Getuid() (uid int)   { return -1 }

func Getgroups() (gids []int, err error) {
	return make([]int, 0), nil
}

//sys	open(path string, mode int) (fd int, err error)

func Open(path string, mode int) (fd int, err error) {