|   268 |   int *ptr = (int *)__builtin_calloc (n, sizeof (int)); | 
 |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | 
 |                     | | 
 |                     (1) this call could return NULL | 
|   269 |   ptr[0] = 42; /* { dg-warning "dereference of possibly-NULL 'ptr'" } */ | 
 |   ~~~~~~~~~~~         | 
 |          | | 
 |          (2) ‘ptr’ could be NULL: unchecked value from (1) |