Bug 87137

Summary: Layout Test fast/block/margin-collapse/103.html is failing (layout assertion)
Product: WebKit Reporter: Joshua Bell <jsbell>
Component: Tools / TestsAssignee: Emil A Eklund <eae>
Status: RESOLVED WORKSFORME    
Severity: Normal CC: eae, leviw
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Reduced test case none

Joshua Bell
Reported 2012-05-22 09:09:41 PDT
The following layout test is failing on [insert platform] fast/block/margin-collapse/103.html Probable cause: WebKit blame range: http://trac.webkit.org/log/?verbose=on&rev=117821&stop_rev=117815 Abbreviated stack is: STDERR: ASSERTION FAILED: newLogicalTop >= logicalTop STDERR: Backtrace: STDERR: WebKit::WebURLRequest::hasUserGesture [0x0247F0EE+11353182] ... STDERR: WebKit::WebURLRequest::hasUserGesture [0x02EBCBB6+22091558] STDERR: webkit_glue::WebURLResponseExtraDataImpl::~WebURLResponseExtraDataImpl [0x099788AE+949584] STDERR: (No symbol) [0x005071B9] ... STDERR: (No symbol) [0x0050DFFC] STDERR: base::SharedMemory::CreateAnonymous [0x00B67B7F+364615] ... STDERR: base::SharedMemory::CreateAnonymous [0x00B6EC70+393528] STDERR: (No symbol) [0x004ABB8D] ... STDERR: (No symbol) [0x00500A0F] STDERR: RegisterWaitForInputIdle [0x7C817077+73] Test results: http://build.chromium.org/f/chromium/layout_test_results/Webkit_Win__dbg__1_/138145/layout-test-results.zip
Attachments
Reduced test case (537 bytes, text/html)
2012-05-22 17:55 PDT, Emil A Eklund 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Joshua Bell
Comment 1 2012-05-22 09:10:18 PDT
Subpixel layout is the most likely culprit given the range and assert. Assigning to eae@ for investigation.
Joshua Bell
Comment 2 2012-05-22 09:10:50 PDT
Also, only failing on webkit win debug.
Emil A Eklund
Comment 4 2012-05-22 17:55:59 PDT
Created attachment 143420 [details] Reduced test case The crash seems to be window size specific. With the reduced test case (attached) it doesn't crash when loaded but as soon as the window is made small enough to toggle scrolling
Joshua Bell
Comment 5 2012-12-06 13:42:02 PST
No longer showing on flakiness dashboard. Presumably fixed, re-open at will.
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