modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr58726.c (about)

     1  /* PR rtl-optimization/58726 */
     2  
     3  int a, c;
     4  union { int f1; int f2 : 1; } b;
     5  
     6  short
     7  foo (short p)
     8  {
     9    return p < 0 ? p : a;
    10  }
    11  
    12  int
    13  main ()
    14  {
    15    if (sizeof (short) * __CHAR_BIT__ != 16
    16        || sizeof (int) * __CHAR_BIT__ != 32)
    17      return 0;
    18    b.f1 = 56374;
    19    unsigned short d;
    20    int e = b.f2;
    21    d = e == 0 ? b.f1 : 0;
    22    c = foo (d);
    23    if (c != (short) 56374)
    24      __builtin_abort ();
    25    return 0;
    26  }