1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-lower -fdump-tree-cddce-details -fdump-tree-optimized" } */
       3  
       4  void f(void)
       5  {
       6    __builtin_strdup ("abc"); /* { dg-warning "ignoring return value of '__builtin_strdup' declared with attribute 'warn_unused_result'" } */
       7  }
       8  
       9  void g(void)
      10  {
      11    __builtin_strndup ("abc", 3); /* { dg-warning "ignoring return value of '__builtin_strndup' declared with attribute 'warn_unused_result'" } */
      12  }
      13  
      14  void h(void)
      15  {
      16    __builtin_realloc (0, 10); /* { dg-warning "ignoring return value of '__builtin_realloc' declared with attribute 'warn_unused_result'" } */
      17  }
      18  
      19  /* { dg-final { scan-tree-dump "Deleting : __builtin_strdup" "cddce1" } } */
      20  /* { dg-final { scan-tree-dump "Deleting : __builtin_strndup" "cddce1" } } */
      21  /* { dg-final { scan-tree-dump "__builtin_malloc" "lower" } } */