https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93095
--- Comment #2 from fdlbxtqi <euloanty at live dot com> --- (In reply to Jakub Jelinek from comment #1) > Can't reproduce and don't see anything problematic on that code. > Unless e.g. the system headers are defining throws as a macro, can you e.g. > attach preprocessed gimple-fold.ii? (E.g. do cd gcc; make gimple-fold.o > and cut'n'paste the command line, replace -c with -E -dD)? probably because I am working on a new Herbception's compiler? BTW, throws should not be an identifier since Herb Sutter is going to use this as his deterministic exception. http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0709r0.pdf I am starting his herbception project. https://github.com/expnkx/gcc/commit/41109f8f8c8f257e4b0ef691b27b1bcfe3d6d3ab Can you give me some guidelines about how to start a new C++ branch??? Herbception is a huge change