c - Checking types of macro parameters at compile time -


To test that two variables have the same structure type I use macros 

  #define

If some function-like macros

#finem (A, B) blockabla

Believe that A and B should be of the same composition type, I combine a compile time probe: 

  # defined M (A, B ) (Assert_same_struct_types (a, b), blablabla)

which stimulates compiler error if MK collar ( A, B) accidentally passes different types of stranks.

However, this approach does not always work due to built-in conversions between them and works for pointer types.

So, it is probably not possible to solve this problem for arbitrary type of Structs?

I need a solution of C89, however, it would be interesting to hear about the CAM or C11 prospects. 

  define aSSERT_SAME_TYPE (a, b) ((zero) (& amp; ( A) == & amp; (B)))

You will get an error with a compiled diagnostic and - Terror ( GCC < / Code> or for the same options for other compilers).

Note that many compilers have non-standard extension operators to get type of objects and it can be used to check two types.


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