While rebuilding packages FTBFS'ing with gcc-4.3, I stumbled upon various quality/sanity levels for code & build systems: from very clean to not-so-nice, dirty, and even scary.

Fortunately, upstreams are sometimes funny and want to make us smile. This one succeeded.

That one is clanlib, Debian bug #454818.

Like pusling already pointed out, there's still a lot to do with RC/RG bugs (although some of them are just prospective/incomplete patches, ls -1 *_gcc-4.3.diff | wc -l reports 133 right now).

Introductory reading for GCC 4.3: Porting to the New Tools.

Please fix your bugs, prepare NMUs and so on, instead of just trolling like/with a bird.