| // Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'dart:typed_data'; |
| |
| @pragma('vm:never-inline') |
| double getDoubleWithHeapObjectTag() { |
| final bd = ByteData(8); |
| bd.setUint64(0, 0x8000000180000001, Endian.host); |
| final double v = bd.getFloat64(0, Endian.host); |
| return v; |
| } |
| |
| // Make an integer that would look like an object pointer (irrespective of |
| // we compile to 32-bit or 64-bit and whether we use little or big endian |
| // encoding of the integer). |
| int get integerFieldValue => |
| int.parse('1') == 1 ? constIntegerFieldValue : 0x8000900180009001; |
| const int constIntegerFieldValue = 0x8000000180000001; |
