215897 2020-08-27 12:25:04 -0700 [JSC] setLength in Array#push could get very large length 2020-08-27 17:51:59 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 ysuzuki ysuzuki darin ews-watchlist keith_miller mark.lam msaboff saam tzagallo webkit-bug-importer oldest_to_newest 1683448 0 ysuzuki 2020-08-27 12:25:04 -0700 [JSC] setLength in Array#push could get very large length 1683450 1 407422 ysuzuki 2020-08-27 12:29:07 -0700 Created attachment 407422 Patch 1683451 2 ysuzuki 2020-08-27 12:29:09 -0700 <rdar://problem/67859149> 1683456 3 407422 keith_miller 2020-08-27 12:34:48 -0700 Comment on attachment 407422 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=407422&action=review r=me with nits. > Source/JavaScriptCore/ChangeLog:10 > + Before r266215, it was using putLength which throws an error. But it is replaced with setLength, Nit: But it *was* replaced. > Source/JavaScriptCore/ChangeLog:11 > + and JSC::setLength assumes that this never gets such a length with an assertion. We should fix it Nit: assumes that *it* never gets *a length greater than UINT32_MAX by asserting*. 1683457 4 407422 ysuzuki 2020-08-27 12:35:41 -0700 Comment on attachment 407422 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=407422&action=review Thanks! >> Source/JavaScriptCore/ChangeLog:10 >> + Before r266215, it was using putLength which throws an error. But it is replaced with setLength, > > Nit: But it *was* replaced. Fixed. >> Source/JavaScriptCore/ChangeLog:11 >> + and JSC::setLength assumes that this never gets such a length with an assertion. We should fix it > > Nit: assumes that *it* never gets *a length greater than UINT32_MAX by asserting*. Fixed. 1683489 5 ysuzuki 2020-08-27 14:33:03 -0700 Committed r266257: <https://trac.webkit.org/changeset/266257> 1683509 6 407422 darin 2020-08-27 16:02:02 -0700 Comment on attachment 407422 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=407422&action=review > Source/JavaScriptCore/runtime/ArrayPrototype.cpp:168 > + if (UNLIKELY(value > UINT32_MAX)) { Could this be an maxArrayLength constant instead of UINT32_MAX? 1683543 7 407422 darin 2020-08-27 17:51:59 -0700 Comment on attachment 407422 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=407422&action=review >> Source/JavaScriptCore/runtime/ArrayPrototype.cpp:168 >> + if (UNLIKELY(value > UINT32_MAX)) { > > Could this be an maxArrayLength constant instead of UINT32_MAX? Like maybe: constexpr uint32_t maxArrayLength = MAX_ARRAY_INDEX + 1; 407422 2020-08-27 12:29:07 -0700 2020-08-27 12:34:48 -0700 Patch bug-215897-20200827122906.patch text/plain 4217 ysuzuki U3VidmVyc2lvbiBSZXZpc2lvbjogMjY2MjQ4CmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCBh NTVkYzZiYWYyNTJkZDdlNGY4OGYwYWM1MWNlOTViMTVlNDhhY2I1Li44MDYyYWNjYzYxN2M4ZmI1 ZGJiNmVmMmFkOWFhZWY4MjlmN2I2YzdkIDEwMDY0NAotLS0gYS9Tb3VyY2UvSmF2YVNjcmlwdENv cmUvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKQEAgLTEs MyArMSwxOSBAQAorMjAyMC0wOC0yNyAgWXVzdWtlIFN1enVraSAgPHlzdXp1a2lAYXBwbGUuY29t PgorCisgICAgICAgIFtKU0NdIHNldExlbmd0aCBpbiBBcnJheSNwdXNoIGNvdWxkIGdldCB2ZXJ5 IGxhcmdlIGxlbmd0aAorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5j Z2k/aWQ9MjE1ODk3CisgICAgICAgIDxyZGFyOi8vcHJvYmxlbS82Nzg1OTE0OT4KKworICAgICAg ICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBBcnJheSNwdXNoIGNhbiBn 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