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Diffstat (limited to 'test/pending/pos/t2071.scala')
| -rw-r--r-- | test/pending/pos/t2071.scala | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/test/pending/pos/t2071.scala b/test/pending/pos/t2071.scala deleted file mode 100644 index a384cdfd3b..0000000000 --- a/test/pending/pos/t2071.scala +++ /dev/null @@ -1,21 +0,0 @@ -/** - * We still have to evaluate whether we will permit existentials - * with cross type dependencies. My current reaction would be no. - * Ticket stays open until a decision is made. - */ -trait Iterable[+S] -trait Box[U] - -trait A { - type T <: Iterable[S] forSome { type S <: Box[U]; type U } -} - -trait B extends A { - type T <: Iterable[S] forSome { type S <: Box[U]; type U } -} -/* -But according to SLS, 3.5.1 Type Equivalence: Two existential types (ยง3.2.10) are equivalent if they have the same number of quantifiers, and, after renaming one list of type quantifiers by another, the quantified types as well as lower and upper bounds of corresponding quantifiers are equivalent. - -So, every existential type must be equivalent to (and conform to) itself. -Attachments -*/ |