How to make a recursive rule in boost spirit x3 in VS2017

Question

I wrote the following recursive rule in boost :: spirit :: x3, but it only compiles in g ++ / clang, not VS2017 (15.5.3):

#include <iostream> #include <boost/spirit/home/x3.hpp> namespace lex3 { namespace x3 = boost::spirit::x3; x3::rule<struct foo_class> const foo = "foo"; x3::rule<struct bar_class> const bar = "bar"; auto bar_def = *((x3::char_ - "/*") - "*/") >> *(foo > *((x3::char_ - "/*") - "*/")); auto foo_def = "/*" > bar > "*/"; BOOST_SPIRIT_DEFINE(foo) BOOST_SPIRIT_DEFINE(bar) } int main(int argc, char** argv) { std::string input = "/* a /* nested */ comment */"; auto f = input.begin(); auto l = input.end(); if (parse(f, l, lex3::foo) && (f == l)) std::cout << "Parse success.\n"; else std::cout << "Parse failure (remainder: " << std::string(f, l) << ").\n"; return 0; } 

Link Coliru, g ++

link Coliru, clang ++

How do I make this work in VS2017 (if possible)?

PS: The toolkit for the platform is installed in v141, the ISO standard is set to C ++ 17, the accelerated version is 1.66.0

PPS: Compilation errors are as follows

 error C2039: 'insert': is not a member of 'boost::spirit::x3::unused_type' note: see declaration of 'boost::spirit::x3::unused_type' error C2039: 'end': is not a member of 'boost::spirit::x3::unused_type' note: see declaration of 'boost::spirit::x3::unused_type' error C2039: 'begin': is not a member of 'boost::spirit::x3::unused_type' note: see declaration of 'boost::spirit::x3::unused_type' 

Answer 1

I checked the Boost.Spirit repository on GitHub because my local version was too old and noticed that your example compiles fine with the latest develop branch, but not with the release 1.66.0 (also on Clang and GCC). By dividing the commit history, this error was fixed in

ee4943d5891bdae0706fb616b908e3bf528e0dfa

You can either apply the patch from this commit to your installation, or wait for the next version.