>Please clarify if this is a bug. It is not. Preprocessor is mostly a parser, so what you write has to match the syntax rules it works upon. Since in preprocessor commands you can specify strings (for example in #error or #waring), preprocessor still parses the apostrophes. To be more clear, a parser gives no sematic interpretation to what you write. I mean, the parser won't understand that #if 0 means that you want to discard what you are going to write afterwards. He just "reads" it, demanding to a second phase further processing. So, you were expecting a behaviour like "since I found #if 0, I am not going to consider anything until #endif". But that's not the way a parser works like... Regards, Alessandro
