the result is wrong while importing boost library

[顾涛明]

#include <iostream>
#include <vector>
#include <boost/algorithm/string.hpp>
using namespace std;
using namespace boost;

int main() {

    int ss[3];
    ss[4]=0;  //out of bounds

    string str("readme.txt");
    if (ends_with(str, " txt")) {
        cout << to_upper_copy(str) + "UPPER" << endl;              // upper case
    }

    replace_first(str, "readme ", "followme ");                       // replace
    cout << str << endl;

    vector<char> v(str.begin(), str.end());
    vector<char> v2 = to_upper_copy(erase_first_copy(v, "txt ")); // delete sub string
    for (int i = 0; i < v2.size(); ++i) {
        cout << v2[i];
    }

    return 0;
}

For the above code, the following command can detect the error：

$ cppcheck --force --enable=all  -I /usr/include/ --output-file=cppcheck.txt main.cpp

[main.cpp:10]: (error) Array 'ss[3]' accessed at index 4, which is out of bounds.
[main.cpp:10]: (style) Variable 'ss' is assigned a value that is never used.
(information) Cppcheck cannot find all the include files (use --check-config for details)

But if I import the boost_1_66_0, the result will misrecognize many issues about boost, and cannot detect the real error in main.cpp. Does anybody can solve this problem？

$ cppcheck --force --enable=all -I /usr/local/include/ -I /usr/include/ --output-file=cppcheck.txt main.cpp

[/usr/local/include/boost/preprocessor/config/config.hpp:92]: (error) #elif without #if
[/usr/local/include/boost/config.hpp:39]: (error) No header in #include
[/usr/local/include/boost/algorithm/string/std/slist_traits.hpp:16]: (error) No header in #include
[/usr/local/include/boost/preprocessor/variadic/elem.hpp:92]: (error) #endif without #if
[/usr/local/include/boost/preprocessor/config/config.hpp:82]: (error) failed to expand         'BOOST_PP_VARIADICS_MSVC', Invalid ## usage when expanding 'BOOST_PP_VARIADICS_MSVC'.
[/usr/local/include/boost/config.hpp:57]: (error) No header in #include
[/usr/local/include/boost/config.hpp:48]: (error) No header in #include
[/usr/local/include/boost/config.hpp:30]: (error) No header in #include
(information) Cppcheck cannot find all the include files (use --check-config for details)

[versat]

I can reproduce this.
While Cppcheck is not really meant to work with system/library include files (better use library configurations for that), i think there is also a problem with parsing the boost header file.
This could maybe really be an issue relevant to Cppcheck.
For code like this (similar to boosts config.hpp):

#
# if 1
#  define a 1
# endif

int main()
{
    printf("%d", a);
}

simplecpp (part of Cppcheck) reports this error:

$ ./simplecpp include.hpp

include.hpp:4: syntax error: #endif without #if

Removing the single # at the top makes it work again.

[versat]

I created this issue for simplecpp.

[顾涛明]

Thank you very much!

[versat]

A short update:
The issue #125 has been fixed in simplecpp and it already works better parsing the boost headers, but there is still an issue.
I created issue #126 for simplecpp which addresses the new problem.