id summary reporter owner description type status milestone component version severity resolution keywords cc 6770 qi+lexer combination behaves differently when BOOST_SPIRIT_DEBUG is defined Jeff Trull Hartmut Kaiser I have a (buggy) grammar, in the course of debugging which I discovered that my grammar passes and consumes all input if BOOST_SPIRIT_DEBUG is true, but does not consume all input if it is not enabled. An (apparently) equivalent version that does not use the lexer does not exhibit this behavior. Bugs closed To Be Determined spirit Boost 1.49.0 Problem fixed lex qi debug