modernc.org/ccgo/v3@v3.16.14/lib/testdata/bug/sizeof2.c (about)

     1  typedef union
     2  {
     3    char c;
     4    double f;
     5  } Union;
     6  
     7  typedef struct
     8  {
     9    int Count;
    10    Union List[0];
    11  } Struct3;
    12  
    13  int main() {
    14  }