Deprecate Typedef

I have a few TypeDefs that I want to deprecate. I am doing this to retain backward c开发者_JS百科ompatibility with code that already exists. Is there an elegant (or maybe not so elegant) solution to this? I would like it to be platform independent but if there is a Visual Studio only solution, that will do as well.

In MSVC++, you can deprecate typedef like this:

typedef __declspec(deprecated) int myint;

The MSVC++ compiler will generate warning that myintis deprecated!

And if you want the compiler to generate a specific message when compiling a deprecated typedef, then do this:

typedef __declspec(deprecated("myint is deprecated, so most likely in the next version this myint will be missing")) int myint;

I know this question is 10 years old, but for anyone still asking this question, this syntax has been supported since C++14:

[[deprecated("reason")]] typedef int type;

If one-off easy code changes are allowed you could just move the typedef into a deprecated namespace requiring the use of using namespace deprecated at the points that use the typedef.

If that's not an option it might be possible to concoct a template that, when instantiated, would generate a warning, but I don't know how to generate such a warning offhand:

template <class T>
class TypedefHolder;

template <>
class TypedefHolder<int>
{
    typedef int WhateverType;
    // Something that induces a compile warning.
};

so instead of:

typedef int WhateverType;

it becomes:

typedef TypedefHolder<int>::WhateverType WhateverType;