1  /* PR middle-end/102403 - ICE in init_from_control_deps, at
       2     gimple-predicate-analysis.cc:2364
       3     { dg-do compile }
       4     { dg-options "-O2 -Wall" } */
       5  
       6  int __fmaf (void)
       7  {
       8    int a = 0;
       9    int b, c, d, e, f;
      10  
      11    int r = 0;
      12  
      13    switch (b)        // { dg-warning "-Wuninitialized" }
      14      {
      15      default:
      16        c |= 1;
      17  
      18      case 0:
      19        if (c == 0)
      20  	a = 1;
      21  
      22        switch (d) {
      23        case 15:
      24  	f = c;
      25  	break;
      26  
      27        case 11:
      28        case 6:
      29        case 4:
      30  	f = c;
      31        case 10:
      32  	e = a;
      33        }
      34  
      35        if (e == 0)   // { dg-warning "-Wmaybe-uninitialized" }
      36    	f = 0;
      37  
      38        r = f;
      39    }
      40  
      41    // The return statement below gets the unhelpful warning:
      42    // 'f' may be used uninitialized in this function [-Wmaybe-uninitialized]
      43    return r;
      44  }
      45  
      46  /* Prune out warnings issued on the wrong lines, such as:
      47     uninit-pr102403.c:9:13: warning: ‘d’ is used uninitialized [-Wuninitialized]
      48     { dg-prune-output "-Wuninitialized" }
      49     { dg-prune-output "-Wmaybe-uninitialized" } */