[Qt-interest] Segfault when appending to QList

[Gabriel M. Beddingfield]

Hi Vedran,

On Mon, 22 Mar 2010, Vedran Furač wrote:

> This results with:
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000000403c8b in QBasicAtomicInt::operator!= (this=0x1f, value=1)
> at /usr/include/qt4/QtCore/qbasicatomic.h:75
> 75              return _q_value != value;
>
> #0  0x0000000000403c8b in QBasicAtomicInt::operator!= (this=0x1f,
> value=1) at /usr/include/qt4/QtCore/qbasicatomic.h:75
> #1  0x0000000000405d08 in QList<QPair<int, int> >::detach
> (this=0x60b700) at /usr/include/qt4/QtCore/qlist.h:122
> #2  0x0000000000405c81 in QList<QPair<int, int> >::append
> (this=0x60b700, t=...) at /usr/include/qt4/QtCore/qlist.h:468
> foo->append(bla); line

All of the 'this' arguments are very small numbers... 
indicating that they're not valid pointers.  Did you 
actually create the QList<> anywhere?

    foo = new QList<QPair<int,int> >;

-gabriel