1300700 - Assertion failure: nsIntRegion(itemDrawRect).Contains(opaquePixels), at FrameLayerBuilder.cpp:4249

Status: RESOLVED WORKSFORME

(Core :: Layout, defect)

Description

[Carsten Book [:Tomcat]]

Attachment: stack

Assertion failure: nsIntRegion(itemDrawRect).Contains(opaquePixels), at c:/builds/moz2_slave/m-cen-w32-d-000000000000000000/build/src/layout/base/FrameLayerBuilder.cpp:4249

Found via bughunter and reproduced with latest win trunk debug tinderbox build.

Steps to reproduce:
-> Load http://dancevalley.com/timetable
--> Assertion

affect trunk to beta according to bughunter

Comment 1

[Carsten Book [:Tomcat]]

[Tracking Requested - why for this release]:
bughunter find, affects trunk to beta debug builds at least it seems

Comment 2

[Carsten Book [:Tomcat]]

C.J, markus, could you take a look ? thanks!

Comment 3

[u459114]

itemDrawRect = {x = 0, y = 0, width = 17895697, height = 6499}
opaquePixels = {x1 = 0, y1 = 0, x2 = 17895698, y2 = 6498}
nsRect to IntRect? Still checking

Comment 4

[u459114]

Keep ni

Comment 5

[u459114]

Still hit this assertion after rollabck to 0907f97ba5e3(parent revision of the 1st patch in bug 1295094)

Comment 6

[u459114]

./mach mozregression -B debug --arg="http://dancevalley.com/timetable" --good 2015-12-01 --bad 2016-08-23

I try to use mozgresssion to find out which version start to hit this assertion. But what I learn so far is, this problem exists before 2016.

Comment 7

[Markus Stange [:mstange]]

A reduced testcase would be great here.

Comment 8

[Gerry Chang [:gchang]]

Track for 49+/50+/51+ as it affects trunk to beta debug builds.

Comment 9

[Ritu Kothari (:ritu) (Inactive, please n-i to RyanVM, jcristau, or pascal)]

we are a week away from RC, too late, this is now a wontfix for 50.

Comment 10

[Gerry Chang [:gchang]]

Mark 51 fix-optional as the issue has been there before 2016 according to comment #6.

Comment 11

[Chris Peterson [:cpeterson]]

Markus, bug 1151581 has a reduced test case found by the randomstyles fuzzer (bug 306939).

Comment 13

[Julien Cristau [:jcristau]]

Mass wontfix for bugs affecting firefox 52.

Comment 14

[Markus Stange [:mstange]]

FrameLayerBuilder is gone.