digraph "ABI diff" {
  "0" [shape=rectangle, label="'interface'"]
  "1" [label="'void foo(struct leaf*)'"]
  "2" [label="'void(struct leaf*)'"]
  "3" [label="'struct leaf*'"]
  "4" [shape=rectangle, label="'struct leaf'"]
  "5" [label="'unsigned int numbers[2]' → 'int numbers[2]'"]
  "6" [label="'unsigned int[2]' → 'int[2]'"]
  "7" [color=red, label="'unsigned int' → 'int'"]
  "6" -> "7" [label="element"]
  "5" -> "6" [label=""]
  "4" -> "5" [label=""]
  "3" -> "4" [label="pointed-to"]
  "2" -> "3" [label="parameter 1"]
  "1" -> "2" [label=""]
  "0" -> "1" [label=""]
}