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Issue 768102 link

Starred by 1 user
Status: Fixed
Owner:
chrishtr@chromium.org
Closed: Jan 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 3
Type: Bug



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Some SPv2 tests have started failing now that we apply a paint offset translation and scroll clip

Project Member Reported by chrishtr@chromium.org, Sep 23 2017 
Asserts due to an inverted clip in GeometryMapper:

[1:1:0922/170821.405454:2556177342:FATAL:GeometryMapper.cpp(241)] Check failed: success. 
#0 0x000001ce0027 base::debug::StackTrace::StackTrace()
#1 0x000001cf7351 logging::LogMessage::~LogMessage()
#2 0x0000032f6b4b blink::GeometryMapper::LocalToAncestorClipRect()

Comment 1 by wangxianzhu@chromium.org, Dec 15 2017 

With https://chromium-review.googlesource.com/c/chromium/src/+/827671, the original 3 tests pass:

-# crashes due to unexpected calls to GeometryMapper (inverted scroll clip)
- crbug.com/768102  compositing/overflow/reflected-overlay-scrollbars-should-appear-without-compositing.html [ Crash ]
- crbug.com/768102  compositing/overflow/reflected-overlay-scrollbars-should-respect-ancestor-clip.html [ Crash ]
- crbug.com/768102  compositing/overflow/reparented-overlay-scrollbars-should-respect-ancestor-clip.html [ Crash ]

While the following test starts to fail:
+ crbug.com/768102  fast/pagination/multicol.html [ Crash ]

The crash occurs when we are calculating the clip rect of a multicol div under a page-fragmented container. It starts to occur because the CL uses the current layer as the new root_layer more aggressively.

There are no failures on SPv175.

Comment 2 by wangxianzhu@chromium.org, Jan 8 2018

Status: Fixed (was: Assigned)
fast/pagination/multicol.html will be tracked by  bug 796768 .
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