1.2.2.3. alpha.core.CastToStruct (C, C++)
Check for cast from non-struct pointer to struct pointer.

Examples:

// C
struct s {};

void test(int *p) {
  struct s *ps = (struct s *) p; // warn
}

// C++
class c {};

void test(int *p) {
  c *pc = (c *) p; // warn
}