This is so horribly wrong. Firstly, when clang warns you of an error, it tells you the switch it uses to highlight that error, the disabling flag is then "-Wno

This is so horribly wrong. Firstly, when clang warns you of an error, it tells you the switch it uses to highlight that error, the disabling flag is then "-Wno-$switch" (or simply use a clang pragma to disable the warning: http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown http://stackoverflow.com/questions/7017281/performselector-m...) Secondly, the errors reported by -Wall and -Wextra are likely to be program bugs / bugs further down the line. Thirdly: I upgraded my compiler on my CI system, I'd damn well want to know about new errors!