modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr57344-1.c (about)

     1  /* PR middle-end/57344 */
     2  
     3  struct __attribute__((packed)) S
     4  {
     5    int a : 11;
     6  #if __SIZEOF_INT__ * __CHAR_BIT__ >= 32
     7    int b : 22;
     8  #else
     9    int b : 13;
    10  #endif
    11    char c;
    12    int : 0;
    13  } s[2];
    14  int i;
    15  
    16  __attribute__((noinline, noclone)) void
    17  foo (int x)
    18  {
    19    if (x != -3161)
    20      __builtin_abort ();
    21    asm volatile ("" : : : "memory");
    22  }
    23  
    24  int
    25  main ()
    26  {
    27    struct S t = { 0, -3161L };
    28    s[1] = t;
    29    for (; i < 1; i++)
    30      foo (s[1].b);
    31    return 0;
    32  }