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| object Nats { | |
| sealed trait Nat { | |
| type Prev <: Nat { type Succ = Nat.this.type } | |
| type Succ <: Nat { type Prev = Nat.this.type } | |
| } | |
| object Zero extends Nat | |
| type _0 = Zero.type | |
| type _1 = _0#Succ | |
| type _2 = _1#Succ | |
| type _3 = _2#Succ | |
| type _4 = _3#Succ | |
| type _5 = _4#Succ | |
| type _6 = _5#Succ | |
| type _7 = _6#Succ | |
| type _8 = _7#Succ | |
| type _9 = _8#Succ | |
| } | |
| // Largest source alias is _6 | |
| // Largest existential created is _3220.type | |
| // 3.555 real, 7.164 user, 0.202 sys | |
| // | |
| // Largest source alias is _7 | |
| // Largest existential created is _22432.type | |
| // 6.056 real, 11.557 user, 0.416 sys | |
| // | |
| // Largest source alias is _8 | |
| // Largest existential created is _156892.type | |
| // 20.183 real, 29.146 user, 1.645 sys | |
| // | |
| // Largest source alias is _9 | |
| // Largest existential created is _1098088.type | |
| // 869.508 real, 902.972 user, 16.297 sys |
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scala 2.11.0-M8, looks like it might be less pathological in 2.10.