C and C++ Preprocessor: warp, Clang and GCC

I belatedly came across the news regarding warp, a C and C++ preprocessor written by Walter Bright in a joint project with Facebook. This has been released under the Boost license and is available at https://github.com/facebook/warp. The Facebook blog makes the following statement with regards to  improved efficiency over the GCC preprocessor Replacing gcc’s preprocessor …