source: CIVL/mods/dev.civl.com/examples/library/funcPointer.cvl@ cb4d4f4

#include <civlc.cvh>
#include <pointer.cvh>

void test(void f(void*), void* x){
  f(x);
}

int main(){
  int x;

  test($set_default, &x);
  $assert(x==0);
}