Getting warnings with new GCC

The new GCC complains about classes with virtual functions but without virtual destructors. This results in an abundance of warnings when compiling Qt and KDE software, to the point that it completely clutteres the compiler's output.
Is this a known issue?
Elad

dibblethewrecker wrote:
elahav wrote:I have encountered what, from my point of view, is a regression in Archlinux.
I fully understand that it is not Arch's fault that these warnings appear.
I'd quit while you are behind, mate.
It's getting a bit tiresome to explain myself, so I'll try to do it once and get it over with. Anyone still thinking I am behind, contradicting myself, or simply a complete moron, is entitled to do so.
I am a software developer, running Archlinux on my computers. Today I have upgraded my work machine, using pacman, following the move to GCC 4. As a result of this upgrade, I get an abundance of warnings every time I try to compile any piece of code using the Qt and KDE libraries.
The warnings are a result of bugs made by Qt and KDE developers. Not having a virtual destructor for a class containing virtual methods is bad C++ programming. Arch developers are in no way to be blamed for this.
However, as an Archlinux user I have experienced a regression. A regression is a change for the worse in the behaviour of a product. This change was not the result of a modification in the Qt/KDE code, but rather in Archlinux (the move to GCC 4).
If you take a look at some packages, you will often find that the Archlinux developers have included fixes to bugs in the package's own code. This does not mean that the Arch developers are responsible for the bug, but they do take on the responsibility of fixing it in order to make a better final product (the Archlinux distro as a whole).
Since many other distros have made the move to GCC 4, and since software using the Qt and KDE libraries is quite common (to say the least), I was simply wondering if this is a known problem that has perhaps been fixed elsewhere. It would be strange if no one else has noticed it.

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