Crash in WebCore::Length::isCalculatedEqual

[Michael Catanzaro]

Created attachment 319440 [details]
Backtrace

Crash in WebCore::Length::isCalculatedEqual:

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 WebCore::operator== at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/platform/CalculationValue.h:160
 #1 WebCore::Length::isCalculatedEqual at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/platform/Length.cpp:284
 #2 WebCore::Length::operator== at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/platform/Length.h:226
 #3 WebCore::TranslateTransformOperation::operator== at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/platform/graphics/transforms/TranslateTransformOperation.cpp:35
 #4 WebCore::TransformOperation::operator!= at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/platform/graphics/transforms/TransformOperation.h:60
 #5 WebCore::TransformOperations::operator== at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/platform/graphics/transforms/TransformOperations.cpp:45
 #6 WebCore::StyleTransformData::operator== at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/rendering/style/StyleTransformData.cpp:53
 #7 WebCore::DataRef<WebCore::StyleTransformData>::operator== at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/rendering/style/DataRef.h:82
 #8 WebCore::StyleRareNonInheritedData::operator== at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/rendering/style/StyleRareNonInheritedData.cpp:233
 #9 WebCore::DataRef<WebCore::StyleRareNonInheritedData>::operator== at /usr/src/debug/webkitgtk-2.16.1/Source/WebCore/rendering/style/DataRef.h:82

I have only one report of this total, so it's probably low priority. Better backtrace attached.

[Konstantin Tokarev]

Maybe it's caused by https://bugs.webkit.org/show_bug.cgi?id=179675, though may backtrace is totally different

[Radar WebKit Bug Importer]

<rdar://problem/35536485>

[Simon Fraser (smfr)]

Is this a crash or assertion?

[Konstantin Tokarev]

Attached backtrace is from release version where asserts are disabled, and Length::calculationValue() doesn't have RELEASE_ASSERT. So it's not enough to state that these two issues are same

[Simon Fraser (smfr)]

Need to test to see if this still occurs.

[Martin Robinson]

I'm pretty sure this is a duplicate of bug 237389, so I'm closing this. We can reopen if we see these kind of crashes again.

*** This bug has been marked as a duplicate of bug 237389 ***