diff options
Diffstat (limited to 'test/files/neg')
-rw-r--r-- | test/files/neg/bug412.check | 6 | ||||
-rw-r--r-- | test/files/neg/bug412.scala | 31 |
2 files changed, 37 insertions, 0 deletions
diff --git a/test/files/neg/bug412.check b/test/files/neg/bug412.check new file mode 100644 index 0000000000..6caf74fb3d --- /dev/null +++ b/test/files/neg/bug412.check @@ -0,0 +1,6 @@ +bug412.scala:9 error: type mismatch; + found : scala.AllRef(null) + required: A.this.CX with A.this.C2 + val c: CX with C2 = null; + ^ +one error found diff --git a/test/files/neg/bug412.scala b/test/files/neg/bug412.scala new file mode 100644 index 0000000000..66de4761fb --- /dev/null +++ b/test/files/neg/bug412.scala @@ -0,0 +1,31 @@ +object Magic { + + abstract class A[T1,T2]() { + trait C { type T; } + trait C1 extends C { type T = T1; } + trait C2 extends C { type T <: T2; } + + type CX; + val c: CX with C2 = null; + + def castA(x: c.T): T2 = x; + } + + class B[T1,T2] extends A[T1,T2]() { + type CX = C1; + + def castB(x: T1): T2 = castA(x); + } + + def cast[T1,T2](v: T1): T2 = + new B[T1,T2]().castB(v) + +} + +object Test { + + def main(args: Array[String]): Unit = { + Magic.cast[String,Exception]("xyz").printStackTrace(); + } + +} |