|    16 |   |   global_union.ptr_val = malloc (1024); /* { dg-message "allocated here" } */ | 
                          |       |   |                          ^~~~~~~~~~~~~ | 
                          |       |   |                          | | 
                          |       |   |                          (1) allocated here
  | 
                          |    17 |   |   global_union.int_val = 0; /* { dg-warning "leak of 'global_union.ptr_val' " } */ | 
                          |       |   |   ~~~~~~~~~~~~~~~~~~~~~~~~ | 
                          |       |   |                        | | 
                          |       |   |                        (2) ⚠️  ‘global_union.ptr_val’ leaks here; was allocated at (1)
  |