diff options
Diffstat (limited to 'tests/untried/neg/t8146-non-finitary-2.scala')
| -rw-r--r-- | tests/untried/neg/t8146-non-finitary-2.scala | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tests/untried/neg/t8146-non-finitary-2.scala b/tests/untried/neg/t8146-non-finitary-2.scala new file mode 100644 index 000000000..c12f5f8f4 --- /dev/null +++ b/tests/untried/neg/t8146-non-finitary-2.scala @@ -0,0 +1,8 @@ +// Example 3 from "On Decidability of Nominal Subtyping with Variance" (Pierce, Kennedy) +// http://research.microsoft.com/pubs/64041/fool2007.pdf +trait N[-Z] +trait D[Y] +trait C[X] extends N[N[C[D[X]]]] +object Test { + def foo(c: C[Int]): N[C[Int]] = c +} |