'f' not found in any directly #included header

[Prime541]

Hello, cppclean gives me an error on a very simple example.
'f' not found in any directly #included header
What is wrong?
Best regards
Here is how to reproduce.

~>pip install --user --upgrade cppclean
~>source /mysoft/Python-3.4.3/setenv
~>PYTHONPATH=$PYTHONPATH:~/.local/lib/python2.6/site-packages
~>cat >| main.cpp << EOF
//#include <iostream>

void g(int j) {
  if (j == 3) {
    g(j+1);
  }
}

int f(const int& i) {
  g(i);
  return i - 1;
}

int main() {
  return f(1);
}

EOF
~>g++ ./main.cpp -o main && ./main ; echo $?
0
~>python3 ~/.local/bin/cppclean ./main.cpp ; echo $?
./main.cpp:3: 'g' not found in any directly #included header
./main.cpp:9: 'f' not found in any directly #included header
1

[myint]

I think g() and f() could be made static.

[Prime541]

You're right! C functions can be made private to a compilation unit (.c, .cpp) when prefixed with the 'static' keyword. Now cppclean won't complain that my static functions cannot be found in any header.

~>cat main.h
void g(int j);
~>cat main.cpp
//#include <iostream>
#include "main.h"

void g(int j) {
  if (j == 3) {
    g(j+1);
  }
}

static int f(const int& i) {
  g(i);
  return i - 1;
}

int main() {
  return f(1);
}

~>python3 ~/.local/bin/cppclean ./main.cpp ; echo $?
0