}

	if got, want := rfw.writeBytes, bufsize; got != want {
		t.Errorf("wrote %v bytes with Write, want %v", got, want)
	}
	if got, want := rfw.readFromBytes, len(input)-bufsize; got != want {
		t.Errorf("wrote %v bytes with ReadFrom, want %v", got, want)
	}
}

func TestReadZero(t *testing.T) {
	for _, size := range []int{100, 2} {
		t.Run(fmt.Sprintf("bufsize=%d", size), func(t *testing.T) {

			Elt: sub.Go,
		}
		// Recalculate t.Size now that we know sub.Size.
		t.Size = count * sub.Size
		t.C.Set("__typeof__(%s[%d])", sub.C, dt.Count)

	case *dwarf.BoolType:
		t.Go = c.bool
		t.Align = 1

	case *dwarf.CharType:
		if t.Size != 1 {
			fatalf("%s: unexpected: %d-byte char type - %s", lineno(pos), t.Size, dtype)
		}
		t.Go = c.int8
		t.Align = 1

pkg syscall (darwin-arm64), const CS7 ideal-int
pkg syscall (darwin-arm64), const CS8 = 768
pkg syscall (darwin-arm64), const CS8 ideal-int
pkg syscall (darwin-arm64), const CSIZE = 768
pkg syscall (darwin-arm64), const CSIZE ideal-int
pkg syscall (darwin-arm64), const CSTART = 17
pkg syscall (darwin-arm64), const CSTART ideal-int
pkg syscall (darwin-arm64), const CSTATUS = 20

pkg syscall (freebsd-arm64), const CS7 ideal-int
pkg syscall (freebsd-arm64), const CS8 = 768
pkg syscall (freebsd-arm64), const CS8 ideal-int
pkg syscall (freebsd-arm64), const CSIZE = 768
pkg syscall (freebsd-arm64), const CSIZE ideal-int
pkg syscall (freebsd-arm64), const CSTART = 17
pkg syscall (freebsd-arm64), const CSTART ideal-int
pkg syscall (freebsd-arm64), const CSTATUS = 20

Constants are of the form <code>const_<i>name</i></code>.
For example, given the Go declaration <code>const bufSize =
1024</code>, assembly code can refer to the value of this constant
as <code>const_bufSize</code>.
</p>

<p>
Field offsets are of the form <code><i>type</i>_<i>field</i></code>.
Struct sizes are of the form <code><i>type</i>__size</code>.
For example, consider the following Go definition:
</p>

<pre>

)

const (
	// MaxScanTokenSize is the maximum size used to buffer a token
	// unless the user provides an explicit buffer with [Scanner.Buffer].
	// The actual maximum token size may be smaller as the buffer
	// may need to include, for instance, a newline.
	MaxScanTokenSize = 64 * 1024

	startBufSize = 4096 // Size of initial allocation for buffer.
)

pkg syscall (freebsd-riscv64), const CS8 = 768 #53466
pkg syscall (freebsd-riscv64), const CS8 ideal-int #53466
pkg syscall (freebsd-riscv64), const CSIZE = 768 #53466
pkg syscall (freebsd-riscv64), const CSIZE ideal-int #53466
pkg syscall (freebsd-riscv64), const CSTART = 17 #53466
pkg syscall (freebsd-riscv64), const CSTART ideal-int #53466
pkg syscall (freebsd-riscv64), const CSTATUS = 20 #53466

pkg crypto/md5, const BlockSize = 64
pkg crypto/md5, const Size = 16
pkg crypto/sha1, const BlockSize = 64
pkg crypto/sha1, const Size = 20
pkg crypto/sha256, const BlockSize = 64
pkg crypto/sha256, const Size = 32
pkg crypto/sha256, const Size224 = 28
pkg crypto/sha512, const BlockSize = 128
pkg crypto/sha512, const Size = 64
pkg crypto/sha512, const Size384 = 48
pkg crypto/tls, const NoClientCert = 0

	case "S2":
		curSize = 2
		curQ = 0
	case "S4":
		curSize = 2
		curQ = 1
	case "D1":
		curSize = 3
		curQ = 0
	case "D2":
		curSize = 3
		curQ = 1
	default:
		return 0, errors.New("invalid arrangement in ARM64 register list")
	}
	return (int64(curQ) & 1 << 30) | (int64(curSize&3) << 10), nil
}

// ARM64RegisterListOffset generates offset encoding according to AArch64 specification.

		wantValid:    true,
		wantInverted: []sparseEntry{{0, 5000}},
	}, {
		in: []sparseEntry{{1, 0}}, size: 0,
		wantValid: false,
	}, {
		in: []sparseEntry{{-1, 0}}, size: 100,
		wantValid: false,
	}, {
		in: []sparseEntry{{0, -1}}, size: 100,
		wantValid: false,
	}, {
		in: []sparseEntry{{0, 0}}, size: -100,
		wantValid: false,
	}, {