382208 - "ASSERTION: bad height: 'metrics.height>=0'" with mmultiscripts and mfrac

Status: RESOLVED FIXED

(Core :: MathML, defect)

Description

[Jesse Ruderman]

Attachment: testcase

Loading the testcase triggers:

###!!! ASSERTION: bad height: 'metrics.height>=0', file /Users/jruderman/trunk/mozilla/layout/generic/nsLineLayout.cpp, line 976


This bug is annoying because it can lead to other assertions, screwing with my testing strategy.  For example, this can lead to:

###!!! ASSERTION: Computed overflow area must contain frame bounds: 'aNewSize.width == 0 || aNewSize.height == 0 || aOverflowArea->Contains(nsRect(nsPoint(0, 0), aNewSize))', file /Users/jruderman/trunk/mozilla/layout/generic/nsFrame.cpp, line 5340

or

###!!! ASSERTION: illegal height for combined area: 'aCombinedArea.height >= 0', file /Users/jruderman/trunk/mozilla/layout/generic/nsLineBox.cpp, line 525

Comment 1

[Jesse Ruderman]

Still happens on trunk.

Comment 2

[Karl Tomlinson (:karlt)]

The patch in attachment 282067 [details] [diff] [review] (bug 324857) makes this assertion go away for this testcase anyway.

Comment 3

[Jesse Ruderman]

Yep, this assertion seems to be gone now.