modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/931102-2.c (about)

     1  typedef union
     2  {
     3    long align;
     4    struct
     5      {
     6        short h, l;
     7      } b;
     8  } T;
     9  
    10  f (x)
    11       int x;
    12  {
    13    int num = 0;
    14    T reg;
    15  
    16    reg.b.l = x;
    17    while ((reg.b.l & 1) == 0)
    18      {
    19        num++;
    20        reg.b.l >>= 1;
    21      }
    22    return num;
    23  }
    24  
    25  main ()
    26  {
    27    if (f (2) != 1)
    28      abort ();
    29    exit (0);
    30  }
    31