200148 2019-07-25 18:46:59 -0700 [JSC] Use unalignedLoad for JSRopeString fiber accesses 2019-07-25 21:59:26 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 ysuzuki ysuzuki ews-watchlist keith_miller mark.lam msaboff saam tzagallo webkit-bug-importer oldest_to_newest 1555998 0 ysuzuki 2019-07-25 18:46:59 -0700 [JSC] Use unalignedLoad for JSRopeString fiber accesses 1555999 1 374930 ysuzuki 2019-07-25 18:48:15 -0700 Created attachment 374930 Patch 1556011 2 374934 ysuzuki 2019-07-25 19:59:10 -0700 Created attachment 374934 Patch 1556015 3 374934 mark.lam 2019-07-25 21:06:51 -0700 Comment on attachment 374934 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=374934&action=review r=me > Source/JavaScriptCore/heap/MarkedBlock.h:305 > + // Some of JSCell types assume that the last JSCell in a MarkedBlock has a subsequent memory region (Footer) that can still safely accesible. /accesible/accessed/ > Source/JavaScriptCore/heap/MarkedBlock.h:306 > + // For example, JSRopeString assumes that it can safely access some subsquent bytes of JSRopeString cell. I suggest rephrasing "some subsquent bytes of JSRopeString cell" as "up to 2 bytes beyond the JSRopeString cell". 1556019 4 374934 ysuzuki 2019-07-25 21:42:23 -0700 Comment on attachment 374934 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=374934&action=review >> Source/JavaScriptCore/heap/MarkedBlock.h:305 >> + // Some of JSCell types assume that the last JSCell in a MarkedBlock has a subsequent memory region (Footer) that can still safely accesible. > > /accesible/accessed/ Fixed. >> Source/JavaScriptCore/heap/MarkedBlock.h:306 >> + // For example, JSRopeString assumes that it can safely access some subsquent bytes of JSRopeString cell. > > I suggest rephrasing "some subsquent bytes of JSRopeString cell" as "up to 2 bytes beyond the JSRopeString cell". Fixed. 1556020 5 ysuzuki 2019-07-25 21:58:13 -0700 Committed r247854: <https://trac.webkit.org/changeset/247854> 1556021 6 webkit-bug-importer 2019-07-25 21:59:26 -0700 <rdar://problem/53574198> 374930 2019-07-25 18:48:15 -0700 2019-07-25 19:59:10 -0700 Patch bug-200148-20190725184815.patch text/plain 3536 ysuzuki U3VidmVyc2lvbiBSZXZpc2lvbjogMjQ3ODQ0CmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCA0 Y2Q5YjYyOGMwMGVkMWYzMTNmYjNjNTZkNWQ0ZDgyNTU2NmRjZWUzLi5lYTgxZTU5YjliZGQ3OTEx N2FkMzk5NjkyZmY1YzIzNzUxMmJlOTI0IDEwMDY0NAotLS0gYS9Tb3VyY2UvSmF2YVNjcmlwdENv cmUvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKQEAgLTEs MyArMSwxNiBAQAorMjAxOS0wNy0yNSAgWXVzdWtlIFN1enVraSAgPHlzdXp1a2lAYXBwbGUuY29t PgorCisgICAgICAgIFtKU0NdIFVzZSB1bmFsaWduZWRMb2FkIGZvciBKU1JvcGVTdHJpbmcgZmli ZXIgYWNjZXNzZXMKKyAgICAgICAgaHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcuY2dp 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