QByteArray and operator+ related compilation problems when using Qt master

[Olivier Goffart]

On Thursday 01 September 2011 01:48:01 Luiz Romário Santana Rios wrote:
> Hi. I asked about this in #kde-devel at freenode and I was told to post
> here, so here it goes.
> 
> So, lately I've decided to compile latest KDE master linked against
> latest Qt master. When I do so, I get errors like the ones described
> in this review[1]. I've had similiar problems not only in kdepimlibs,
> but also in runtime, workspace, baseapps and kdevelop (IIRC).
> 
> The fixes for those ones are as straightforward as [1] and already
> done, but I'd like to know whether I should commit them - after
> review, of course - or not, since it may be a Qt bug.
> 
> [1]https://git.reviewboard.kde.org/r/102433/


Do not use Qt "master" branch, use the "4.8" branch.
(the master branch is dead and vary out of date)
(yes, i know it is confusing)

in 4.8, source compatibility is kept and there is a new macro do define to 
enable the optimisation. 

But the patch is probably still good.