On Saturday 09 April 2011 5:02:43 am Thomas Lübking wrote:
> Apparently the KApplication constructor makes some bad call and i'd bet
> it's phonon related (conflicting libs linked from KDE and Qt or whatever?)
> To know fo sure you should maybe fall back to good old gdb, run your
> little crasher and see the real broken statement with a nice "bt".
> You'll probably get no debug dialog cause Dr.Konqui (how is that spelled
> exactly, btw?) crashes itself on the same statement.
>
Tried gdb and bt after all. Application startup failed as follows:
Program received signal SIGFPE, Arithmetic exception.
0xb6a1e592 in intCeil<unsigned int> (a=0, b=0)
at /kde-devel/src/4.6/kdelibs/kdecore/util/kshareddatacache.cpp:161
161 return (a + b - 1) / b;
Relevant source code (in shareddatacache.cpp) reads:
/**
* @return the smallest integer greater than or equal to (@p a / @p b).
* @param a Numerator, should be ≥ 0.
* @param b Denominator, should be > 0.
*/
template<class T>
T intCeil(T a, T b)
{
return (a + b - 1) / b;
}
Urk! a and b were both zero, so it divided by zero. And T = unsigned int, so
why do I get "Floating point exception"?
Maybe I will have a look at shareddatacache.cpp history. I think it was
fairly new in January 2011 and I seem to remember some other gamers
having trouble with it.
I would still like some hints about where to start re building a new Qt and
KDE. I am totally confused and out of touch on that topic. See my previous
post today.
Cheers, Ian W.
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