On Mon, Jan 6, 2014 at 3:47 PM, Josh Triplett <josh@xxxxxxxxxxxxxxxx> wrote: > Does anyone have any objection to the use of "#pragma once" instead of > the usual #ifndef-#define-...-#endif include guard? GCC, LLVM/clang, > and the latest Sparse all support either method just fine. (I added > support to Sparse myself.) Both have equivalent performance. "#pragma > once" is simpler, and avoids the possibility of a typo in the defined > guard symbol. Unfortunately in GCC #pragma once is slower and slightly buggier than regular include guards: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52566 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58770 -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
