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comparison: js/src/jit-test/tests/basic/bug656261.js
js/src/jit-test/tests/basic/bug656261.js
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- 6474c204b198
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| -1:000000000000 | 0:3dd832312238 |
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| 1 function build_getter(i) { | |
| 2 var x = [i]; | |
| 3 return function f() { return x; } | |
| 4 } | |
| 5 | |
| 6 function test() | |
| 7 { | |
| 8 var N = internalConst("INCREMENTAL_MARK_STACK_BASE_CAPACITY") + 2; | |
| 9 var o = {}; | |
| 10 var descriptor = { enumerable: true}; | |
| 11 for (var i = 0; i != N; ++i) { | |
| 12 descriptor.get = build_getter(i); | |
| 13 Object.defineProperty(o, i, descriptor); | |
| 14 } | |
| 15 | |
| 16 // At this point we have an object o with N getters. Each getter in turn | |
| 17 // is a closure storing an array. During the GC we push to the object | |
| 18 // marking stack all the getters found in an object after we mark it. As N | |
| 19 // exceeds the size of the object marking stack, this requires to run the | |
| 20 // dealyed scanning for some closures to mark the array objects stored in | |
| 21 // them. | |
| 22 // | |
| 23 // We run the GC twice to make sure that the background finalization | |
| 24 // finishes before we access the objects. | |
| 25 gc(); | |
| 26 gc(); | |
| 27 for (var i = 0; i != N; ++i) | |
| 28 assertEq(o[i][0], i); | |
| 29 } | |
| 30 | |
| 31 test(); |
