How can I print the result of sizeof() at compile time in C?

Question

How can I print the result of sizeof() at compile time in C?

For now I am using a static assert (home brewed based on other web resources) to compare the sizeof() re

Answer 1

I stumbled upon a solution similar to Bakhazard's great solution, and this one produces a much less verbose warning, so you may find it useful:

char (*__fail)(void)[sizeof(uint64_t)] = 1;

This produces the error message

Function cannot return array type 'char [8]'

This was tested with the latest version of clang(1).