Bug 1520722 Comment 0 Edit History

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Original comment by
on 
Load the attached test case (modified from the test in bug 1516737). This needs bug 1516739 fixed, or it crashes immediately.

Expected result:
The page should render some text like "ltr".

Actual result:
The page is blank, and there are some warnings like

[2064, Main Thread] ###!!! ASSERTION: frame tree not empty, but caller reported complete status: 'aSubtreeRoot->GetPrevInFlow()', file /home/aethanyc/Projects/gecko-dev/layout/base/nsLayoutUtils.cpp, line 7480
[2064, Main Thread] ###!!! ASSERTION: frame tree not empty, but caller reported complete status: 'start == end || IsInLetterFrame(aSubtreeRoot)', file /home/aethanyc/Projects/gecko-dev/layout/base/nsLayoutUtils.cpp, line 7494


When loading the test by `GECKO_FRAMECTOR_DEBUG_FLAGS=really-noisy-content-updates ./mach run`, I notice that the full frame tree was constructed correctly, but later the nsColumnSetFrame's continuation is somehow being deleted due to some bidi resolution.
Revision 1 by
on 
Load the attached test case (modified from the test in bug 1516737). This needs bug 1516739 fixed, or it crashes immediately.

Expected result:
The page should render some text like "ltr".

Actual result:
The page is blank, and there are some warnings like

```
[2064, Main Thread] ###!!! ASSERTION: frame tree not empty, but caller reported complete status: 'aSubtreeRoot->GetPrevInFlow()', file /home/aethanyc/Projects/gecko-dev/layout/base/nsLayoutUtils.cpp, line 7480
[2064, Main Thread] ###!!! ASSERTION: frame tree not empty, but caller reported complete status: 'start == end || IsInLetterFrame(aSubtreeRoot)', file /home/aethanyc/Projects/gecko-dev/layout/base/nsLayoutUtils.cpp, line 7494
```

When loading the test by `GECKO_FRAMECTOR_DEBUG_FLAGS=really-noisy-content-updates ./mach run`, I notice that the full frame tree was constructed correctly, but later the nsColumnSetFrame's continuation is somehow being deleted due to some bidi resolution.

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