You can't pass function pointers as void pointers. But you CAN pass function pointer pointers as void pointers.

gistfile1.txt

void CallFuncPP(void *r){
    void **d = (void **)r;

    void(**e)(void) = (voidFunc *)d;

    e[0]();
}

/////
//Example

#include<csdtio>

void print(void){
  printf("Hello, world!\n");
}

int main(int argc, char *argv[]){
  void(*functP)(void) = print;
  CallFuncPP((void *)(&funcP));
}