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Fix #2941: Add regression test #11260

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Merged
merged 1 commit into from
Jan 31, 2021
Merged

Fix #2941: Add regression test #11260

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17 changes: 17 additions & 0 deletions tests/pos/i2941.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
trait FooBase {
type Bar >: Null <: BarBase { type This <: FooBase.this.Bar }
type This >: this.type <: FooBase { type This <: FooBase.this.This }

def derived(bar: Bar): This = ???
}

trait BarBase {
type This >: Null <: BarBase { type This <: BarBase.this.This }
}

object Test {
def bad(foo: FooBase): FooBase = foo match {
case foo: FooBase =>
foo.derived(???) // Triggers infinite loop in TypeAssigner.avoid()
}
}