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Diffstat (limited to 'test/files/neg/bug1275.scala')
-rw-r--r-- | test/files/neg/bug1275.scala | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/files/neg/bug1275.scala b/test/files/neg/bug1275.scala new file mode 100644 index 0000000000..04c66400c8 --- /dev/null +++ b/test/files/neg/bug1275.scala @@ -0,0 +1,14 @@ +// tested using Scala compiler version 2.6.0-RC1 -- (c) 2002-2007 LAMP/EPFL + +// prompted by "Covariant return types" mailing list question +object TestCovariance { + + // see Type constructor polymorphism in http://www.scala-lang.org/docu/changelog.html + trait Seq[+t] { + type MyType[+t] <: Seq[t] + + def f: MyType[t] + } + + def span[a, s <: Seq[a] { type MyType <: s } ](xs: s): s = xs f +} |