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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 // Make sure we use JavaScript semantics when compiling compile-time constants. | 5 // Make sure we use JavaScript semantics when compiling compile-time constants. |
6 // In this case we test that the value-range analysis uses JavaScript semantics | 6 // In this case we test that the value-range analysis uses JavaScript semantics |
7 // too. | 7 // too. |
8 | 8 |
9 int inscrutable(int x) => x == 0 ? 0 : x | inscrutable(x & (x - 1)); | 9 int inscrutable(int x) => x == 0 ? 0 : x | inscrutable(x & (x - 1)); |
10 | 10 |
11 foo() { | 11 foo() { |
12 var a = const [1, 2]; | 12 var a = const [1, 2]; |
13 var i = 0x100000000; | 13 var i = 0x100000000; |
14 if (inscrutable(i) == 0) { | 14 if (inscrutable(i) == 0) { |
15 i = 0x100000001; | 15 i = 0x100000001; |
16 } | 16 } |
17 i = 0xFFFFFFFFF & i; // In JS semantics [:i:] will be truncated to 32 bits. | 17 i = 0xFFFFFFFFF & i; // In JS semantics [:i:] will be truncated to 32 bits. |
18 i = 0x100000001 - i; | 18 i = 0x100000001 - i; |
19 return a[i]; | 19 return a[i]; |
20 } | 20 } |
21 | 21 |
22 main() { | 22 main() { |
23 Expect.throws(() => foo(), | 23 Expect.throws(() => foo(), |
24 (e) => e is IndexOutOfRangeException); | 24 (e) => e is RangeError); |
25 } | 25 } |
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