Question

Say you’ve got the following simple main.cpp file:

#include <cstdlib>
#include <iostream>
#include <fstream>

using namespace std;

int main() {
    const string FILENAME = "foo.txt";
    ifstream somefile(FILENAME);
    populations.close();
    return 0;
}

This compiles fine via Visual Studio C++ 2010.

However, on a Linux-based system, if I execute make main and compile, we get an expected error since we didn’t call c_str() on the string constant, like so:

ifstream somefile(FILENAME.c_str());

As is commonly known, and described in this SO thread.

How can I get VS to behave like gcc/g++ and raise a compilation error for the code above? Or, how can I get gcc/g++ to behave like VS and compile the above without error? (Is it a simple matter of upgrading my gnu compiler?)

(I don’t believe disabling compiler extensions is a solution, as I’ve done this and it still compiles without error.)

Answer 1

It is available as part of the newer c++ standard.

To disable, add

  #define _HAS_CPP0X 0

at the top before your includes.