000000a0  00 00 00 00 00 13 3e 42  a5 61 84 ae 49 8b b9 91  |......>B.a..I...|
000000b0  c2 a3 76 74 1e 4f 53 0a  fc 71 de 0d d2 44 c8 ac  |..vt.OS..q...D..|

	return uint64(x >> 15) // arm64:"UBFX\t[$]15, R[0-9]+, [$]17",-"LSR"
}

func ubfx3(x uint16) uint64 {
	return uint64(x >> 9) // arm64:"UBFX\t[$]9, R[0-9]+, [$]7",-"LSR"
}

func ubfx4(x uint8) uint64 {
	return uint64(x >> 3) // arm64:"UBFX\t[$]3, R[0-9]+, [$]5",-"LSR"
}

func ubfx5(x uint32) uint64 {
	return uint64(x) >> 30 // arm64:"UBFX\t[$]30, R[0-9]+, [$]2"
}

func ubfx6(x uint16) uint64 {

	// take in doNotOptimize as an argument to avoid the loops being rewritten to count down
	// s390x:"CGIJ\t[$]12, R[0-9]+, [$]127, "
	for i := doNotOptimize; i < 128; i++ {
		dummy()
	}

	// s390x:"CGIJ\t[$]10, R[0-9]+, [$]-128, "
	for i := doNotOptimize; i > -129; i-- {
		dummy()
	}

	// s390x:"CGIJ\t[$]2, R[0-9]+, [$]127, "
	for i := doNotOptimize; i >= 128; i++ {
		dummy()
	}

	// s390x:"CGIJ\t[$]4, R[0-9]+, [$]-128, "

        0 * details._

        where:
        requested                                            | forcedVersion
        newSelector(mid("org", "module2"), "0.9")            | "2.0"
        newSelector(mid("org", "module2"), "2.1")            | "2.0"
        newSelector(mid("org", "module:with:colon"), "2.0")  | "3.0"
        newSelector(mid("org:with:colon", "module2"), "5.0") | "4.0"
    }

}

var listGroupsTests = []struct {
	// input
	in   string
	user string
	gid  string
	// output
	gids []string
	err  bool
}{
	{in: testGroupFile, user: "root", gid: "0", gids: []string{"0", "1", "2", "7"}},
	{in: testGroupFile, user: "jill", gid: "33", gids: []string{"33", "777"}},
	{in: testGroupFile, user: "jody", gid: "34", gids: []string{"34", "777"}},

	// ppc64x: "RLDICR\t[$]0, R[0-9]*, [$]47, R"
	io64[0] = io64[0] & 0xFFFFFFFFFFFF0000
	// ppc64x: "RLDICL\t[$]0, R[0-9]*, [$]16, R"
	io64[1] = io64[1] & 0x0000FFFFFFFFFFFF
	// ppc64x: -"SRD", -"AND", "RLDICL\t[$]60, R[0-9]*, [$]16, R"
	io64[2] = (io64[2] >> 4) & 0x0000FFFFFFFFFFFF
	// ppc64x: -"SRD", -"AND", "RLDICL\t[$]36, R[0-9]*, [$]28, R"
	io64[3] = (io64[3] >> 28) & 0x0000FFFFFFFFFFFF

			return nil, os.NewSyscallError("bind", err)
		}
	}

	var isloopback bool
	switch ra := ra.(type) {
	case *syscall.SockaddrInet4:
		isloopback = ra.Addr[0] == 127
	case *syscall.SockaddrInet6:
		isloopback = ra.Addr == [16]byte(IPv6loopback)
	default:
		panic("unexpected type in connect")
	}
	if isloopback {

00000070  d9 dd 1d 5b 81 2f 10 a5  65 28 83 93 b3 b1 3a 72  |...[./..e(....:r|
00000080  f0 15 9a e5 9f 21 80 f1  59 a5 0e f1 0c 2b d1 0c  |.....!..Y....+..|
00000090  d4 27 73 f3 7e 15 03 01  00 20 6f 08 27 3a d2 60  |.'s.~.... o.':.`|
000000a0  c3 27 bc 73 55 bb 43 53  e2 e0 87 16 ca 8f 49 f0  |.'.sU.CS......I.|

00000020  6f 2d 7c 2b 51 ed 14 ef  68 ca 42 c5 4c 26 1d 23  |o-|+Q...h.B.L&.#|
00000030  c4 90 54 85 8b 21 f5 0d  e8 48 f2 5f 4e 6b f1 25  |..T..!...H._Nk.%|
00000040  e8 46 8a e5 3c 09 57 df  dd 37 a7 57 c5 a5 28 5a  |.F..<.W..7.W..(Z|
00000050  21 83 2a 98 4b a5 44 aa  5b cc 30 e9 62 49 38 16  |!.*.K.D.[.0.bI8.|
00000060  7e 51 5c e5 15 c0 58 7d  a4 aa c5 93 39 bb e2 b6  |~Q\...X}....9...|
00000070  4f c4 3e 1e 03 dc 46

	0x40, 0x74, 0xe9, 0x21, 0xeb, 0xd2, 0x2b, 0xc8, 0x4e, 0x07, 0x09, 0xe8, 0xc1, 0x74, 0x49, 0xe9,
	0xa6, 0x67, 0x96, 0x64, 0x94, 0x26, 0xe9, 0x25, 0xe7, 0xe7, 0xea, 0xa7, 0xe7, 0xa7, 0xe7, 0xeb,
	0x83, 0x35, 0x27, 0x95, 0xa6, 0x81, 0x79, 0x60, 0x0e, 0x98, 0x05, 0x31, 0x54, 0xc9, 0x82, 0x8b,
	0x23, 0xb0, 0x34, 0x31, 0xaf, 0x24, 0xb3, 0xa4, 0x52, 0x48, 0x8c, 0x8b, 0xad, 0xb8, 0xa4, 0x28,