id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
6616,boost preprocessor bug in 1.49,sni4ok@…,No-Maintainer,"this example work incorrect with boost 1.49 on g++ 4.61 with compile flags -std=gnu++0x[[BR]]
[[BR]]
#define WRITE_TEST_VALUE(r, data, num, name) std::cout << "", num: "" << num << "", name: "" << BOOST_PP_STRINGIZE(name);[[BR]]
#define ON_FOREACH_ARGS(ArgsArray, Functor) \[[BR]]
        BOOST_PP_LIST_FOR_EACH_I(Functor, , \[[BR]]
                    BOOST_PP_TUPLE_TO_LIST(BOOST_PP_ARRAY_SIZE(ArgsArray),  BOOST_PP_ARRAY_DATA(ArgsArray)))[[BR]]
#define TEST_PP_LIST_FOREACH(ArgsArray) \[[BR]]
    std::cout << ""    sz: "" << BOOST_PP_ARRAY_SIZE(ArgsArray); \[[BR]]
    ON_FOREACH_ARGS(ArgsArray, WRITE_TEST_VALUE)[[BR]]

#include <iostream>[[BR]]
#include <boost/preprocessor/list.hpp>[[BR]]
#include <boost/preprocessor/tuple.hpp>[[BR]]
#include <boost/preprocessor/array.hpp>[[BR]]
#include <boost/preprocessor/stringize.hpp>[[BR]]
[[BR]]
int main()[[BR]]
{[[BR]]
    std::cout << ""0:"" << std::endl;[[BR]]
    TEST_PP_LIST_FOREACH((0, ()))[[BR]]
    std::cout << std::endl << ""1:"" << std::endl;[[BR]]
    TEST_PP_LIST_FOREACH((1, (bla)))[[BR]]
    std::cout << std::endl << ""2:"" << std::endl;[[BR]]
    TEST_PP_LIST_FOREACH((2, (nu, bla)))[[BR]]
    std::cout << std::endl;[[BR]]
    return 0;[[BR]]
}[[BR]]
[[BR]]
output:[[BR]]
g++ test_pp.cpp -I/home/snike/boost/boost_1_49_0[[BR]]
./a.out[[BR]]
0:[[BR]]
sz: 0[[BR]]
1:[[BR]]
sz: 1, num: 0, name: bla[[BR]]
2:[[BR]]
sz: 2, num: 0, name: nu, num: 1, name: bla[[BR]]
[[BR]]
output2:[[BR]]
g++ test_pp.cpp -I/home/snike/boost/boost_1_49_0 -std=gnu++0x[[BR]]
./a.out[[BR]]
0:[[BR]]
sz: 0, num: 0, name:[[BR]]
1:[[BR]]
sz: 1, num: 0, name: bla[[BR]]
2:[[BR]]
sz: 2, num: 0, name: nu, num: 1, name: bla[[BR]]
[[BR]]
on boost 1.48 this example work correctly",Bugs,closed,To Be Determined,preprocessor,Boost 1.49.0,Problem,fixed,,