Syntax Error for c++17 code

[Martin Brieg]

running the following code in the online demo with 1.81 returns syntax error

#include <vector>
#include <string>

template <class ContainerT, class KeyGetter>
std::wstring ConcatenateKeyStrings(ContainerT && cont, KeyGetter getKey)
{
  std::wstring resultStr;
  for (auto const & obj : cont) {
    using ToStrFunReturnType = decltype(getKey(obj));
    if constexpr (std::is_same_v<ToStrFunReturnType, int>
      || std::is_same_v<ToStrFunReturnType, unsigned>
      || std::is_same_v<ToStrFunReturnType, size_t>
      || std::is_same_v<ToStrFunReturnType, int64_t>
      ) {
      resultStr += std::to_wstring(getKey(obj));
    }
    else {
      resultStr += getKey(obj);
    }
  }
  return resultStr;
}

void Test()
{
  std::vector<int> ints = {1,2,3,4,5,42};
  std::wstring str = ConcatenateKeyStrings(ints, [](int i) -> int{ return i; });
}

Is there any estimate when c++17 will be supported? I know this is a lot to ask for.

In the meantime, would it be possible to optionally just ignore statements containing c++17 code, so that cppcheck works for majority of the code base not using c++17 features? The tool is very usefull and i dont want to work without it.

[Daniel Marjamäki]

Sorry I have no estimate. I would like to somehow ignore these until we handle it fully so it will be possible to analyze c++17 code asap.

could you open some tickets for c++17 features that we need to add?
http://trac.cppcheck.net

if you need a trac account, send me your htpasswd hash and I will create an account for you. A simple method to generate the htpasswd hash is to use this webpage: http://www.htaccesstools.com/htpasswd-generator/