1  /* PR c++/78949 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-Wunused -fdump-tree-optimized" } */
       4  /* { dg-additional-options "-fno-common" { target hppa*-*-hpux* } } */
       5  
       6  typedef unsigned char V __attribute__((vector_size(16)));
       7  V v;
       8  
       9  void
      10  foo ()
      11  {
      12    V y = {};
      13    V x = {};	// { dg-bogus "set but not used" }
      14    y &= ~x;
      15    v = y;
      16  }
      17  
      18  /* { dg-final { scan-tree-dump-not " ~0" "optimized" } } */