digraph "ABI diff" {
  "0" [shape=rectangle, label="'interface'"]
  "1" [label="'struct X x'"]
  "2" [shape=rectangle, label="'struct X'"]
  "3" [color=red, label="'int a' → 'int a:32'"]
  "3" -> "3:0"
  "3:0" [color=red, label="was not a bit-field, is now a bit-field"]
  "2" -> "3" [label=""]
  "4" [color=red, label="'int b:32' → 'int b'"]
  "4" -> "4:0"
  "4:0" [color=red, label="was a bit-field, is now not a bit-field"]
  "2" -> "4" [label=""]
  "5" [color=red, label="'int c' → 'int c:16'"]
  "5" -> "5:0"
  "5:0" [color=red, label="was not a bit-field, is now a bit-field"]
  "2" -> "5" [label=""]
  "6" [color=red, label="'int d:16' → 'int d'"]
  "6" -> "6:0"
  "6:0" [color=red, label="was a bit-field, is now not a bit-field"]
  "2" -> "6" [label=""]
  "1" -> "2" [label=""]
  "0" -> "1" [label=""]
}