C++ Parser can't read code. Declaration is skipped. With correct code.

[PawelKm]

I have cpp file where I have function:

bool ConfigurationLoader::LoadSetting(
    const std::pair<std::string, const boost::property_tree::basic_ptree<std::string, std::string>> &inTree,
    const std::string &setting,
    std::pair<std::string,
                   boost::property_tree::basic_ptree<
                  std::string, std::string, std::less<std::string>>> &retVal)

and also hpp file where I have declaration:

static bool LoadSetting(
      const std::pair<std::string, const boost::property_tree::basic_ptree<std::string, std::string>> &inTree,
      const std::string &setting,
      std::pair<std::string,
                boost::property_tree::basic_ptree<
                    std::string, std::string, std::less<std::string>>> &retVal);

in both files I have #include <boost/property_tree/xml_parser.hpp>
what includes
#include <boost/property_tree/ptree.hpp>
what includes
#include <boost/property_tree/ptree_fwd.hpp> what contains the forward declaration:

template < class Key, class Data, class KeyCompare = std::less<Key> >
    class basic_ptree;

But still using const boost::property_tree::basic_ptree<std::string, std::string>> causes 5 issues reported with declarations skipped up to first namespace level.

Usage of const boost::property_tree::basic_ptree<std::string, std::string, std::less<std::string>>> fixes the problem for now.

[guwirth]

@PawelKm thanks for your feedback.

• The cxx plugin is only parsing the grammar. So problem should occur with or without header files.
• Which cxx plugin version are you using?
• Is your compiler supporting the code? Which compiler?
• Please try to narrow down the problem with our sslr-toolkit:
  • https://github.com/SonarOpenCommunity/sonar-cxx/releases/download/cxx-0.9.7/sslr-cxx-toolkit-0.9.7.jar
  • or with latest https://ci.appveyor.com/api/buildjobs/tqoyv1u2fq6kttb9/artifacts/sslr-cxx-toolkit%2Ftarget%2Fsslr-cxx-toolkit-0.9.8-SNAPSHOT.jar
  • Play around with the code and provide a minimal example to reproduce the issue.
  • Does this issue only occur when template is a function parameter or also if you try to create a global variable?

[PawelKm]

This I can provide now:

• Which cxx plugin version are you using?
  -- 0.9.7 release version
• Is your compiler supporting the code? Which compiler?
  -- yes I use VS2015 C++, Visual Studio2017 C++, gcc 4.9.2, gcc 4.9.4

I will try to narrow down problem whenever I find free time.

[guwirth]

Hi @PawelKm

reduced sample:

bool ok1(templateName1<templateName<string>> declarator); // without const
bool ok2(templateName1<const templateName<string> > declarator); // blank between >>

bool failure(templateName1<const templateName<string>> declarator); // failure

As a workaround you can add a blank between >>.

Regards

[PawelKm]

Thanks @guwirth that helped also!

[guwirth]

@ametselaar we need your help. We have a hard grammar nut to crack.
Do you have some time to have a look to this issue?

[guwirth]

see #1685

[zdg123456]

@guwirth 您好
我这边也碰到C++ Parser can't read code.Declaration is skipped这个报错
具体报错：
ERROR: Undefined functionlike macro '__has_attribute' assuming 0
ERROR: Undefined functionlike macro '__has_attribute' assuming 0
ERROR: Undefined functionlike macro '__has_extension' assuming 0
ERROR: Undefined functionlike macro 'KERNEL_VERSION' assuming 0
ERROR: Undefined functionlike macro 'RHEL_RELEASE_VERSION' assuming 0
C插件版本：sonar-c-plugin-1.3.2.1853.jar
C++插件版本：sonar-cxx-plugin-2.0.7.3119.jar

[guwirth]

Hi @zdg123456,

please have a look to https://github.com/SonarOpenCommunity/sonar-cxx/wiki/Dealing-with-compiler-specific-code-pieces

Regards,