Re: [CRASH] assertion triggered when scrolling down Tutorial.lyx

[Abdelrazak Younes]

Abdelrazak Younes wrote:
1) Open Intro.lyx
2) PagesDown 5 times
The following assertion is triggered in text2.C:994 (LyXText::editXY()):

    // This should be just before or just behind the
    // cursor position set above.
    BOOST_ASSERT((pos != 0 && inset == pars_[pit].getInset(pos - 1))
             || inset == pars_[pit].getInset(pos));


The problem is that at pit=13 and pos-1=317 we have
  inset != pars_[pit].getInset(pos - 1)

In fact this happens when both pars_[pit].getInset(pos - 1) and 
pars_[pit].getInset(pos) are equal to zero.

When stepping through InsetList::get(pos_type pos), the inset at pos is 
not found and 0 is return.

Abdel.