Suppress Compiler warning Function declared never referenced

Question

So i have some code like this:

void foo (int, int);

void bar ( )
{
    //Do Stuff

   #if (IMPORTANT == 1)
       foo (1, 2);
   #endif

}

Answer 1

I find a way to do that globally and it works also in c

#define SUPPRESS_UNUSED_WARN(var) \
    int _dummy_tmp_##var = ((int)(var) & 0)

then you use it like:

static int foo(int a, int b)
{
    // ....
}
SUPRESS_UNUSED_WARN(foo);

• it can be used on functions and global variables
• it should be placed globally in order to work work
• it can't be used for local variables