Is there an equivalent of gcc's -Wshadow in visual C++

Question

-Wshadow will "Warn whenever a local variable shadows another local variable.". Is there an equivalent in Visual C++ (2008)? I tried /W4 but it didn't pick up on it. I also tried Cppcheck but that didn't see it either.

e.g. if I inadvertently do:

class A
{
        private:
                int memberVar;
        public:
                void fn()
                {
                        int memberVar = 27;
                }
};

I would really like to know about it!

Answer 1

Check out warnings C6244 and C6246

But you will need to enable automatic code analysis to get them, see How to: Enable and Disable Automatic Code Analysis for C/C++

If you cannot do it in your VS edition (Analyzing Managed Code Quality by Using Code Analysis), try to add the /analyze flag to the compilation command line. You will get some warnings that the '/analyze-' flag, which has been added by your IDE, is replaced with the manually added '/analyze' flag, but the analysis will work ;-)

Answer 2

I am afraid no.

You could perhaps try compiling your code with Clang:

• it has this warning (and a lot of others)
• it has a compatibility mode for MSVC headers (and can build most of MFC)

We use gcc at work, to build our code, but compile with Clang regularly to test the code conformance to the Standard and benefit from its warnings.