Makes sense, thanks for the explanation. > And language extensions are hardly unfair. In practice they're used all over the place, and people expect them to wo

Makes sense, thanks for the explanation. > And language extensions are hardly unfair. In practice they're used all over the place, and people expect them to work in their IDEs, especially when they're off in some header they didn't write. (Attributes help here, somewhat, when compiler vendors can move extensions into them.) It's a C++-as-it-is-used-in-the-wild problem then, not a (ISO) C++ one ;) Anyway: I myself never had any problems, but all my programs build fine with Clang (as all C++ programs should IMHO).