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| author | Paul Phillips <paulp@improving.org> | 2013-05-31 03:55:46 -0700 |
|---|---|---|
| committer | Paul Phillips <paulp@improving.org> | 2013-05-31 04:34:31 -0700 |
| commit | 3c21aa38731b5011d09207e106918e16ded8ff98 (patch) | |
| tree | b747e33cebf671af969c8c0ea77334cc16414e3d /test/files/pos/t7520.scala | |
| parent | bcd052c029129129c2364327e79c4d66eb6193ee (diff) | |
| download | scala-3c21aa38731b5011d09207e106918e16ded8ff98.tar.gz scala-3c21aa38731b5011d09207e106918e16ded8ff98.tar.bz2 scala-3c21aa38731b5011d09207e106918e16ded8ff98.zip | |
SI-7520 bug in subtyping.
isSubType, if given two SingleTypes, would check =:= and
stop there. It is necessary to continue with weakening the left
hand side, because (for instance) the singleton type on the
left hand side could be a refinement class carrying parents
which are themselves single or constant types.
Diffstat (limited to 'test/files/pos/t7520.scala')
| -rw-r--r-- | test/files/pos/t7520.scala | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/files/pos/t7520.scala b/test/files/pos/t7520.scala new file mode 100644 index 0000000000..747f5278e5 --- /dev/null +++ b/test/files/pos/t7520.scala @@ -0,0 +1,10 @@ +class A { + val x: Singleton with this.type = this + val y: this.type = x +} + +class B { + val x = "" + val xs: x.type with Singleton = x + val y: x.type = xs +} |