Bug 128283
| Summary: | REGRESSION (r163262?): transitions/shorthand-border-transitions.html flakily asserts | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Alexey Proskuryakov <ap> |
| Component: | Layout and Rendering | Assignee: | zalan <zalan> |
| Status: | ASSIGNED | ||
| Severity: | Normal | CC: | mcatanzaro, zalan |
| Priority: | P2 | Keywords: | Regression |
| Version: | 528+ (Nightly build) | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| See Also: | https://bugs.webkit.org/show_bug.cgi?id=128395 | ||
Alexey Proskuryakov
transitions/shorthand-border-transitions.html has started to flakily assert on WebKit2 debug testers:
ASSERTION FAILED: !rect.isEmpty()
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.JavaScriptCore 0x00000001106fd90a WTFCrash + 42 (Assertions.cpp:333)
1 com.apple.WebCore 0x000000011209d410 WebCore::GraphicsContext::drawRect(WebCore::FloatRect const&) + 128 (GraphicsContextCG.cpp:293)
2 com.apple.WebCore 0x0000000112e8b0a1 WebCore::RenderObject::drawLineForBoxSide(WebCore::GraphicsContext*, WebCore::LayoutUnit, WebCore::LayoutUnit, WebCore::LayoutUnit, WebCore::LayoutUnit, WebCore::BoxSide, WebCore::Color, WebCore::EBorderStyle, int, int, bool) + 16193 (RenderObject.cpp:937)
3 com.apple.WebCore 0x0000000112d58723 WebCore::RenderBoxModelObject::paintOneBorderSide(WebCore::GraphicsContext*, WebCore::RenderStyle const*, WebCore::RoundedRect const&, WebCore::RoundedRect const&, WebCore::LayoutRect const&, WebCore::BoxSide, WebCore::BoxSide, WebCore::BoxSide, WebCore::BorderEdge const*, WebCore::Path const*, WebCore::BackgroundBleedAvoidance, bool, bool, bool, WebCore::Color const*) + 2419 (RenderBoxModelObject.cpp:1695)
A lot of similar assertions were introduced in r163262 and fixed in r163264, but this one is still happening. The first occurrence was on r163263, and it happens about 1 time out of 10.
| Attachments | ||
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| Add attachment proposed patch, testcase, etc. |
Alexey Proskuryakov
This is readily reproducible locally.
zalan
I tried to repro it a few times with no success...I'll try again.
Alexey Proskuryakov
I was simply running this command, and could reproduce two times out of three:
run-webkit-tests -2 transitions/shorthand-border-transitions.html
Should probably be easier to reproduce with "--iterations 100".
Alexey Proskuryakov
Skipped the test in debug builds in <http://trac.webkit.org/r163951>.
Michael Catanzaro
Probably a dup of bug #128395?