67759 2011-09-07 20:49:32 -0700 Positioned Floats: Assertion hit in fast/block/positioning/positioned-float-layout-after-image-load.html 2011-12-18 18:52:21 -0800 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P1 Normal --- 54611 1 rniwa robert darin hyatt loislo mitz ossy robert simon.fraser zoltan oldest_to_newest 463866 0 rniwa 2011-09-07 20:49:32 -0700 fast/block/positioning/positioned-float-layout-after-image-load.html started hitting an assertion since the build 2042 today. See also: http://build.webkit.org/results/SnowLeopard%20Intel%20Debug%20(Tests)/r94686%20(2040)/results.html http://build.webkit.org/results/SnowLeopard%20Intel%20Debug%20(Tests)/r94700%20(2042)/results.html http://build.webkit.org/builders/SnowLeopard%20Intel%20Debug%20%28Tests%29/builds/2042 ASSERTION FAILED: isPlaced() /Volumes/Big/slave/snowleopard-intel-debug/build/Source/WebCore/rendering/RenderBlock.h(473) : WebCore::LayoutUnit WebCore::RenderBlock::FloatingObject::y() const 1 WebCore::RenderBlock::FloatingObject::y() const 2 WebCore::RenderBlock::logicalTopForFloat(WebCore::RenderBlock::FloatingObject const*) const 3 WebCore::LineWidth::shrinkAvailableWidthForNewFloatIfNeeded(WebCore::RenderBlock::FloatingObject*) 4 WebCore::RenderBlock::positionNewFloatOnLine(WebCore::RenderBlock::FloatingObject*, WebCore::RenderBlock::FloatingObject*, WebCore::LineWidth&) 5 WebCore::RenderBlock::LineBreaker::skipLeadingWhitespace(WebCore::BidiResolver<WebCore::InlineIterator, WebCore::BidiRun>&, WebCore::LineInfo const&, WebCore::RenderBlock::FloatingObject*, WebCore::LineWidth&) 6 WebCore::RenderBlock::LineBreaker::nextLineBreak(WebCore::BidiResolver<WebCore::InlineIterator, WebCore::BidiRun>&, WebCore::LineInfo&, std::pair<WebCore::RenderText*, WebCore::LazyLineBreakIterator>&, WebCore::RenderBlock::FloatingObject*) 7 WebCore::RenderBlock::layoutRunsAndFloatsInRange(WebCore::LineLayoutState&, WebCore::BidiResolver<WebCore::InlineIterator, WebCore::BidiRun>&, WebCore::InlineIterator const&, WebCore::BidiStatus const&) 8 WebCore::RenderBlock::layoutRunsAndFloats(WebCore::LineLayoutState&, bool) 9 WebCore::RenderBlock::layoutInlineChildren(bool, int&, int&) 10 WebCore::RenderBlock::layoutBlock(bool, int, WebCore::RenderBlock::BlockLayoutPass) 11 WebCore::RenderBlock::layout() 12 WebCore::RenderBlock::layoutBlockChild(WebCore::RenderBox*, WebCore::RenderBlock::MarginInfo&, int&, int&) 13 WebCore::RenderBlock::layoutBlockChildren(bool, int&) 14 WebCore::RenderBlock::layoutBlock(bool, int, WebCore::RenderBlock::BlockLayoutPass) 15 WebCore::RenderBlock::layout() 16 WebCore::RenderBlock::layoutBlockChild(WebCore::RenderBox*, WebCore::RenderBlock::MarginInfo&, int&, int&) 17 WebCore::RenderBlock::layoutBlockChildren(bool, int&) 18 WebCore::RenderBlock::layoutBlock(bool, int, WebCore::RenderBlock::BlockLayoutPass) 19 WebCore::RenderBlock::layout() 20 WebCore::RenderBlock::layoutBlockChild(WebCore::RenderBox*, WebCore::RenderBlock::MarginInfo&, int&, int&) 21 WebCore::RenderBlock::layoutBlockChildren(bool, int&) 22 WebCore::RenderBlock::layoutBlock(bool, int, WebCore::RenderBlock::BlockLayoutPass) 23 WebCore::RenderBlock::layout() 24 WebCore::RenderView::layout() 25 WebCore::FrameView::layout(bool) 26 WebCore::Document::updateLayout() 27 WebCore::Document::updateLayoutIgnorePendingStylesheets() 28 WebCore::Element::offsetTop() 29 WebCore::jsElementOffsetTop(JSC::ExecState*, JSC::JSValue, JSC::Identifier const&) 30 JSC::PropertySlot::getValue(JSC::ExecState*, JSC::Identifier const&) const 31 JSC::JSValue::get(JSC::ExecState*, JSC::Identifier const&, JSC::PropertySlot&) const 463869 1 rniwa 2011-09-07 20:52:21 -0700 Suspicious revisions: http://trac.webkit.org/changeset/94690 http://trac.webkit.org/changeset/94693 http://trac.webkit.org/changeset/94695 http://trac.webkit.org/changeset/94697 http://trac.webkit.org/changeset/94698 463877 2 rniwa 2011-09-07 21:28:50 -0700 The test was added by http://trac.webkit.org/changeset/94695. 463997 3 ossy 2011-09-08 05:31:47 -0700 Same assert on GTK and on Qt too. 463999 4 ossy 2011-09-08 05:32:57 -0700 *** Bug 67769 has been marked as a duplicate of this bug. *** 464006 5 zoltan 2011-09-08 06:03:05 -0700 I rolled out in http://trac.webkit.org/changeset/94755. 464230 6 rniwa 2011-09-08 12:00:39 -0700 (In reply to comment #5) > I rolled out in http://trac.webkit.org/changeset/94755. Okay, thanks! 464251 7 robert 2011-09-08 12:25:47 -0700 This ASSERT happens without r94755 - but the test I added, positioned-float-layout-after-image-load.html, triggers it. I agreed with smfr to reland r94755 without the test and the ASSERT can be worked separately here. 464263 8 ossy 2011-09-08 12:46:17 -0700 (In reply to comment #7) > This ASSERT happens without r94755 - but the test I added, positioned-float-layout-after-image-load.html, triggers it. I agreed with smfr to reland r94755 without the test and the ASSERT can be worked separately here. It's correct. +1 vote for relanding without the test. 464398 9 robert 2011-09-08 14:56:42 -0700 (In reply to comment #0) > > ASSERTION FAILED: isPlaced() > /Volumes/Big/slave/snowleopard-intel-debug/build/Source/WebCore/rendering/RenderBlock.h(473) : WebCore::LayoutUnit WebCore::RenderBlock::FloatingObject::y() const > 1 WebCore::RenderBlock::FloatingObject::y() const > 2 WebCore::RenderBlock::logicalTopForFloat(WebCore::RenderBlock::FloatingObject const*) const > 3 WebCore::LineWidth::shrinkAvailableWidthForNewFloatIfNeeded(WebCore::RenderBlock::FloatingObject*) > 4 WebCore::RenderBlock::positionNewFloatOnLine(WebCore::RenderBlock::FloatingObject*, WebCore::RenderBlock::FloatingObject*, WebCore::LineWidth&) This creates the floating object: FloatingObject* newObj = new FloatingObject(o->style()->floating()); but it is not 'placed' with this constructor, it requires a frameRect for that. It would get 'placed in positionNewFloats() but: // The containing block is responsible for positioning floats, so if we have floats in our // list that come from somewhere else, do not attempt to position them. Also don't attempt to handle // positioned floats, since the positioning layout code handles those. if (floatingObject->renderer()->containingBlock() != this || floatingObject->renderer()->isPositioned()) continue; prevents this. Because positionNewFloats() still returns true, it does not cause positionNewFloatOnLine() to return early and the assert is triggered. The comment makes this look like the problem may be deeper than just returning early, so don't know if that's the right fix. 523208 10 119710 mitz 2011-12-16 19:39:03 -0800 Created attachment 119710 Made line layout functions treat positioned floats like positioned objects 523627 11 darin 2011-12-18 18:47:16 -0800 Might even be worth a comment in those call sites saying that things both positioned and floating should be treated as positioned. 523629 12 mitz 2011-12-18 18:52:21 -0800 Fixed in <http://trac.webkit.org/r103206>. 119710 2011-12-16 19:39:03 -0800 2011-12-18 18:46:50 -0800 Made line layout functions treat positioned floats like positioned objects 67759_r1.diff text/plain 10012 mitz SW5kZXg6IFNvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2UvV2Vi Q29yZS9DaGFuZ2VMb2cJKHJldmlzaW9uIDEwMzEzOCkKKysrIFNvdXJjZS9XZWJDb3JlL0NoYW5n 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