1  /* Test whether statement with no effect warnings are not given for last
       2     statements inside of statement expression.  */
       3  /* { dg-do compile } */
       4  /* { dg-options "-O -Wall" } */
       5  
       6  void bar (char *p, char *q);
       7  
       8  int main()
       9  {
      10    char foo [32], *p;
      11  
      12    ({
      13      void *s = (foo);
      14      __builtin_memset (s, '\0', sizeof (foo));
      15      s; /* { dg-warning "no effect" "statement with no effect warning" } */
      16      s; /* { dg-bogus "no effect" "bogus statement with no effect warning" } */
      17    });
      18    p = foo;
      19    p;   /* { dg-warning "no effect" "statement with no effect warning" } */
      20    bar (foo, p);
      21    return 0;
      22  }