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comparison: js/src/jit-test/tests/basic/bug786114.js
js/src/jit-test/tests/basic/bug786114.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:8c85d9c0f6ba |
|---|---|
| 1 let expected = 'o!o!o!'; | |
| 2 let actual = ''; | |
| 3 | |
| 4 // g is a function that needs an implicit |this| if called within a |with| | |
| 5 // statement. If we fail to provide that implicit |this|, it will append | |
| 6 // "[object global]" instead of "o!". | |
| 7 let o = { | |
| 8 g: function() { actual += this.toString(); }, | |
| 9 toString: function() { return "o!"; } | |
| 10 } | |
| 11 | |
| 12 // g's presence within the |with| is detected by simple tracking of |with|s | |
| 13 // during parsing. | |
| 14 with (o) { | |
| 15 (function() { g(); })(); | |
| 16 } | |
| 17 | |
| 18 // The eval() defeats the tracking of |with| during parsing. Instead, g's | |
| 19 // presence within the |with| is detected by looking at the scopeChain of the | |
| 20 // ParseContext. | |
| 21 with (o) { | |
| 22 eval("(function() { g(); })()"); | |
| 23 } | |
| 24 | |
| 25 // This is like the above case, but the knowledge of the |with| presence must | |
| 26 // be inherited by the inner function. This is the case that was missed in bug | |
| 27 // 786114. | |
| 28 with (o) { | |
| 29 eval("(function() { (function() { g(); })(); })()"); | |
| 30 } | |
| 31 | |
| 32 assertEq(actual, expected); |
