C->C++ Automatically cast void pointer into Type pointer in C++ in #define in case of type is not given (C-style) [MSVS]

Question

Hi!

I\'ve used the following C macro, But in C++ it can\'t automatically cast void* to type*

Answer 1

I do not recommend doing this; this is terrible code and if you are using C you should compile it with a C compiler (or, in Visual C++, as a C file)

If you are using Visual C++, you can use decltype:

#define MALLOC_SAFE(var, size)                      \
{                                                   \
    var = static_cast(malloc(size)); \
    if (!var) goto error;                           \
}