https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79241
--- Comment #2 from night_ghost at ykoctpa dot ru --- 90mbytes of code? you must be joking! But when I try to do a testcase with only few files then all compiles OK. Moreover the classes which uses FUNCTOR_BIND_MEMBER without additional "using namespace XXXX" all compiles fine too.