RESOLVED FIXED 205165
Uninitialized variables in RenderLayer 
https://bugs.webkit.org/show_bug.cgi?id=205165
Summary Uninitialized variables in RenderLayer
Carlos Garcia Campos
Reported 2019-12-12 09:05:14 PST
Caught by valgrind: ==134047== Conditional jump or move depends on uninitialised value(s) ==134047== at 0x7DD9B96: WebCore::RenderLayer::setIsCSSStackingContext(bool) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7DE8F7D: WebCore::RenderLayer::RenderLayer(WebCore::RenderLayerModelObject&) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7E34150: WebCore::RenderLayerModelObject::createLayer() (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7E34B1B: WebCore::RenderLayerModelObject::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7D5BD36: WebCore::RenderBox::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7D5D0AD: WebCore::RenderBlock::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7D5D417: WebCore::RenderBlockFlow::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7FBA6D2: WebCore::RenderTreeUpdater::createRenderer(WebCore::Element&, WebCore::RenderStyle&&) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7FBA961: WebCore::RenderTreeUpdater::updateElementRenderer(WebCore::Element&, WebCore::Style::ElementUpdate const&) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7FBBFCE: WebCore::RenderTreeUpdater::updateRenderTree(WebCore::ContainerNode&) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x7FBC70A: WebCore::RenderTreeUpdater::commit(std::unique_ptr<WebCore::Style::Update const, std::default_delete<WebCore::Style::Update const> >) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== by 0x750BDB5: WebCore::Document::resolveStyle(WebCore::Document::ResolveStyleType) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==134047== ==133221== Conditional jump or move depends on uninitialised value(s) ==133221== at 0x7DD9CCF: WebCore::RenderLayer::setIsNormalFlowOnly(bool) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7DE8F6A: WebCore::RenderLayer::RenderLayer(WebCore::RenderLayerModelObject&) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7E34150: WebCore::RenderLayerModelObject::createLayer() (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7E34B1B: WebCore::RenderLayerModelObject::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7D5BD36: WebCore::RenderBox::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7D5D0AD: WebCore::RenderBlock::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7D5D417: WebCore::RenderBlockFlow::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7FBA6D2: WebCore::RenderTreeUpdater::createRenderer(WebCore::Element&, WebCore::RenderStyle&&) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7FBA961: WebCore::RenderTreeUpdater::updateElementRenderer(WebCore::Element&, WebCore::Style::ElementUpdate const&) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7FBBFCE: WebCore::RenderTreeUpdater::updateRenderTree(WebCore::ContainerNode&) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x7FBC70A: WebCore::RenderTreeUpdater::commit(std::unique_ptr<WebCore::Style::Update const, std::default_delete<WebCore::Style::Update const> >) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221== by 0x750BDB5: WebCore::Document::resolveStyle(WebCore::Document::ResolveStyleType) (in /home/cgarcia/src/git/gnome/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37.42.0) ==133221==
Attachments
Patch (1.32 KB, patch)
2019-12-12 09:07 PST, Carlos Garcia Campos 		simon.fraser: review+
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Carlos Garcia Campos
Comment 1 2019-12-12 09:07:04 PST
Created attachment 385499 [details] Patch
Carlos Garcia Campos
Comment 2 2019-12-13 00:41:01 PST
Committed r253466: <https://trac.webkit.org/changeset/253466>
Radar WebKit Bug Importer
Comment 3 2019-12-13 00:41:17 PST
<rdar://problem/57905791>
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