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comparison: js/src/jit-test/tests/parser/bug-888002-3.js
js/src/jit-test/tests/parser/bug-888002-3.js
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| -1:000000000000 | 0:448ea238fce9 |
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| 1 // Constant folding doesn't affect strict delete either. | |
| 2 // In particular, it doesn't affect whether |delete x| is a strict error. | |
| 3 | |
| 4 load(libdir + "asserts.js"); | |
| 5 | |
| 6 (function (x) { | |
| 7 "use strict"; | |
| 8 | |
| 9 // These senseless delete-expressions are legal even in strict mode. | |
| 10 // Per ES5.1 11.4.1 step 2, each one does nothing and returns true. | |
| 11 assertEq(delete (1 ? x : x), true); | |
| 12 assertEq(delete (0 || x), true); | |
| 13 assertEq(delete (1 && x), true); | |
| 14 | |
| 15 // Plain `delete x` is a SyntaxError though. | |
| 16 assertThrowsInstanceOf(() => eval('delete x'), SyntaxError); | |
| 17 assertThrowsInstanceOf(() => Function('"use strict"; delete x'), SyntaxError); | |
| 18 }()); |
