Incompatible pointer types passing in _Generic macro

Question

The following code generates 2 warnings which are described in the question\'s title.

#include 

static void _print_f(float *f){printf(\"float         


        

Answer 1

This is not a bug in clang, but unfortunately what the C11 standard requires. All branches of a _Generic primary expression must be a valid expressions, and thus valid under all circumstances. The fact that only one of the branches will ever be evaluated, is not related to this.

Your alternative version is what C11 foresees for situations as this: chose the function (and not the evaluated call) as a result of the type generic expression, and apply that function to the arguments.