1  #include <stdlib.h>
       2  
       3  union
       4  {
       5    void *ptr_val;
       6    int int_val;
       7  } global_union;
       8  
       9  void test_1 (void)
      10  {
      11    global_union.ptr_val = malloc (1024);
      12  }
      13  
      14  void test_2 (void)
      15  {
      16    global_union.ptr_val = malloc (1024); /* { dg-message "allocated here" } */
      17    global_union.int_val = 0; /* { dg-warning "leak of 'global_union.ptr_val' " } */
      18  }