30313 2009-10-12 14:20:25 -0700 NULL ptr in SVGPathSegList::getPathSegAtLength() 2009-12-03 11:34:33 -0800 1 1 1 Unclassified WebKit SVG 528+ (Nightly build) PC Windows Vista RESOLVED FIXED http://skypher.com/SkyLined/Repro/WebKit/Bug%2030313%20-%20NULL%20ptr%20in%20SVGPathSegList..getPathSegAtLength()/repro.html GoogleBug, HasReduction, InRadar P1 Normal --- 1 skylined webkit-unassigned aroben eric oliver webkit.review.bot oldest_to_newest 154161 0 skylined 2009-10-12 14:20:25 -0700 Repro: <SCRIPT> SVGPathElement = document.createElementNS("http://www.w3.org/2000/svg", "path"); SVGPathElement.pathSegList.initialize(); SVGPathElement.getPathSegAtLength(2699076708.473027); </SCRIPT> In the below code, "getItem(i, ec).get();" returns NULL, which is not handled properly, so "segment->pathSegType()" gets called and a NULL ptr read exception is thrown. unsigned SVGPathSegList::getPathSegAtLength(double) { // FIXME : to be useful this will need to support non-normalized SVGPathSegLists ExceptionCode ec = 0; int len = numberOfItems(); // FIXME: Eventually this will likely move to a "path applier"-like model, until then PathTraversalState is less useful as we could just use locals PathTraversalState traversalState(PathTraversalState::TraversalSegmentAtLength); for (int i = 0; i < len; ++i) { SVGPathSeg* segment = getItem(i, ec).get(); float segmentLength = 0; switch (segment->pathSegType()) { <snip> 154234 1 mrowe 2009-10-12 18:51:46 -0700 <rdar://problem/7297519> 168313 2 44213 oliver 2009-12-03 01:03:27 -0800 Created attachment 44213 Patch 168314 3 webkit.review.bot 2009-12-03 01:08:15 -0800 style-queue ran check-webkit-style on attachment 44213 without any errors. 168317 4 44213 mjs 2009-12-03 01:15:34 -0800 Comment on attachment 44213 Patch r=me 168322 5 oliver 2009-12-03 01:22:56 -0800 Committed r51627 168404 6 aroben 2009-12-03 07:36:04 -0800 This caused bug 32117. 168486 7 ap 2009-12-03 11:34:33 -0800 Looks like this should be marked as resolved. Please reopen and explain if it shouldn't. 44213 2009-12-03 01:03:27 -0800 2009-12-03 01:15:34 -0800 Patch bug-30313-20091203010326.patch text/plain 11725 oliver ZGlmZiAtLWdpdCBhL0xheW91dFRlc3RzL0NoYW5nZUxvZyBiL0xheW91dFRlc3RzL0NoYW5nZUxv ZwppbmRleCAyMTI5MTdhLi5jNThiYTc2IDEwMDY0NAotLS0gYS9MYXlvdXRUZXN0cy9DaGFuZ2VM b2cKKysrIGIvTGF5b3V0VGVzdHMvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMTUgQEAKKzIwMDktMTIt MDMgIE9saXZlciBIdW50ICA8b2xpdmVyQGFwcGxlLmNvbT4KKworICAgICAgICBSZXZpZXdlZCBi eSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBOVUxMIHB0ciBpbiBTVkdQYXRoU2VnTGlzdDo6 Z2V0UGF0aFNlZ0F0TGVuZ3RoKCkKKyAgICAgICAgaHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hv d19idWcuY2dpP2lkPTMwMzEzCisKKyAgICAgICAgQWRkIHRlc3RjYXNlcyBmb3IgaW5jb3JyZWN0 IHBhdGhTZWcgdXNhZ2UuCisKKyAgICAgICAgKiBzdmcvZG9tL3N2Z3BhdGgtb3V0LW9mLWJvdW5k cy1nZXRQYXRoU2VnLWV4cGVjdGVkLnR4dDogQWRkZWQuCisgICAgICAgICogc3ZnL2RvbS9zdmdw YXRoLW91dC1vZi1ib3VuZHMtZ2V0UGF0aFNlZy5odG1sOiBBZGRlZC4KKwogMjAwOS0xMi0wMiAg 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