1  /* PR rtl-optimization/94873 */
       2  /* { dg-do run { target int128 } } */
       3  /* { dg-options "-O -fno-merge-constants -fno-split-wide-types -fno-tree-fre" } */
       4  
       5  __attribute__((noipa)) void
       6  foo (const char *p, int q)
       7  {
       8    if (p[0] != '%' || p[1] != '0' || p[2] != '2' || p[3] != 'x' || p[4] != '\0')
       9      __builtin_abort ();
      10  #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
      11    if ((unsigned char) q != 0x95)
      12      __builtin_abort ();
      13  #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
      14    if ((unsigned char) q != 0)
      15      __builtin_abort ();
      16  #endif
      17  }
      18  
      19  int
      20  main ()
      21  {
      22    union U { __int128 a; char b[sizeof (__int128)]; };
      23    char x = ((union U){ .a = 0xF4409395252B9560ULL}).b[1];
      24    for (unsigned i = 0; i < sizeof (x); i++)
      25      foo ("%02x", i[(volatile unsigned char *) &x]);
      26    return 0;
      27  }