KDE SC 4.8.4 important problems

[Sebastian Trüg]

On 06/10/2012 12:57 PM, Andreas Pakulat wrote:
> Hi,
>
> Am Sonntag, 10. Juni 2012 schrieb Peter Penz :
>
>     On 06/10/2012 11:20 AM, Aaron J. Seigo wrote:
>
>         On Sunday, June 10, 2012 03:23:04 José Manuel Santamaría Lema wrote:
>
>             #1 dolphin:
>             #2 gwenview
>             #6 kontact executing various components: calendar, to-do
>             list, journal
>             #7 kmail links
>
>
>         these are all the same crash, or at least related to each other.
>         it is
>         crashing in KServiceTypeTrader::__defaultOffers or
>         KMimeTypeTrader::query
>         apparently at times in KSycocaDict::find_string.
>
>
>     The issue has been tracked at
>     https://bugs.kde.org/show_bug.__cgi?id=268064
>     <https://bugs.kde.org/show_bug.cgi?id=268064> - updating Soprano to
>     the latest master resolves the crash. But I don't know more about
>     the root-cause of this. Probably a Nepomuk-related update missed a
>     proper versioning-check of Soprano?
>
>
> There has been an abi breakage in soparano's latest release (fixed in
> the repository already), so updating to that soprano release requires
> rebuilding all other code that uses it. I've seen backtraces ending in
> qstring::ref having such abi incompatibilities as cause, so it would fit
> at least those cases.

Can someone explain how a missing class declaration (that is all that 
changed) can result in such a crash?
I simply want to understand, not challenge it.

Cheers,
Sebastian