digraph "ABI diff" {
  "0" [shape=rectangle, label="'interface'"]
  "1" [label="'void baz(const struct foo*)'"]
  "2" [label="'void(const struct foo*)'"]
  "3" [label="'const struct foo*'"]
  "4" [label="'const struct foo'"]
  "5" [color=red, shape=rectangle, label="'struct foo'"]
  "5" -> "5:0"
  "5:0" [color=red, label="byte size changed from 4 to 8"]
  "6" [label="'int bar[1]' → 'int bar[2]'"]
  "7" [color=red, label="'int[1]' → 'int[2]'"]
  "7" -> "7:0"
  "7:0" [color=red, label="number of elements changed from 1 to 2"]
  "6" -> "7" [label=""]
  "5" -> "6" [label=""]
  "4" -> "5" [label="underlying"]
  "3" -> "4" [label="pointed-to"]
  "2" -> "3" [label="parameter 1"]
  "1" -> "2" [label=""]
  "0" -> "1" [label=""]
}