Bug 1585778 Comment 15 Edit History

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Reproduced the initial issue on an asan build from 71.0a1 20191001041624, the tab with the testcase crashes with :

Assertion failure: mPresContext->GetVisibleArea().width != nscoord((1 << 30) - 1) (width should not be NS_UNCONSTRAINEDSIZE after reflow), at /builds/worker/workspace/build/src/layout/base/PresShell.cpp:1994

Proceeded onto verifying the testcase on  on m-c-20191125042312-fuzzing-asan-opt: 
the tab doesn't crash anymore, no asserting failure, however, I get an NS_Error_failure on line 17 on tab.sizeToContent()  -> XHR POST http://localhost:8000/1
[HTTP/1.0 501 Unsupported method ('POST')
Wonder if this is expected, :emilio, could you please advise?
Reproduced the initial issue on an asan build from 71.0a1 20191001041624, the tab with the testcase crashes with :

Assertion failure: mPresContext->GetVisibleArea().width != nscoord((1 << 30) - 1) (width should not be NS_UNCONSTRAINEDSIZE after reflow), at /builds/worker/workspace/build/src/layout/base/PresShell.cpp:1994

Proceeded onto verifying the testcase on  on m-c-20191125042312-fuzzing-asan-opt: 
the tab doesn't crash anymore, no asserting failure, however, I get an NS_Error_failure on line 17 in the testcase on tab.sizeToContent()  -> XHR POST http://localhost:8000/1
[HTTP/1.0 501 Unsupported method ('POST')
Wonder if this is expected, :emilio, could you please advise?

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