modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr78726.c (about)

     1  /* PR tree-optimization/78726 */
     2  
     3  unsigned char b = 36, c = 173;
     4  unsigned int d;
     5  
     6  __attribute__((noinline, noclone)) void
     7  foo (void)
     8  {
     9    unsigned a = ~b;
    10    d = a * c * c + 1023094746U * a;
    11  }
    12  
    13  int
    14  main ()
    15  {
    16    if (__SIZEOF_INT__ != 4 || __CHAR_BIT__ != 8)
    17      return 0;
    18    asm volatile ("" : : "g" (&b), "g" (&c) : "memory");
    19    foo ();
    20    if (d != 799092689U)
    21      __builtin_abort ();
    22    return 0;
    23  }