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author | Adriaan Moors <adriaan.moors@typesafe.com> | 2014-02-10 13:43:30 -0800 |
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committer | Adriaan Moors <adriaan.moors@typesafe.com> | 2014-02-12 15:36:31 -0800 |
commit | 427b82648422e4118c68f34e81c94deca3755deb (patch) | |
tree | eff3dbe39b6d04feabfc44ba07aa3cada5a7a2ae /test/files/pos/t8177b.scala | |
parent | 7ea7a3b89b2a597f7aa22eefe39e3bae7244882f (diff) | |
download | scala-427b82648422e4118c68f34e81c94deca3755deb.tar.gz scala-427b82648422e4118c68f34e81c94deca3755deb.tar.bz2 scala-427b82648422e4118c68f34e81c94deca3755deb.zip |
SI-8177 refine embeddedSymbols
We look for any prefix that has a refinement class for a type symbol.
This includes ThisTypes, which were not considered before.
pos/t8177g.scala, neg/t0764*scala now compile, as they should
Additional test cases contributed by Jason & Paul.
Diffstat (limited to 'test/files/pos/t8177b.scala')
-rw-r--r-- | test/files/pos/t8177b.scala | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/files/pos/t8177b.scala b/test/files/pos/t8177b.scala new file mode 100644 index 0000000000..b7ed9342a3 --- /dev/null +++ b/test/files/pos/t8177b.scala @@ -0,0 +1,13 @@ +// exercise coevolveSym: SingleType with an underlying RefinedType, via a type alias +trait Thing { type A } +object IntThing extends Thing { type A = Int } +object ThingHolder { type Alias[AIn] = Thing { type A = AIn } } + +// The following erroneously failed with error: method f overrides nothing. +// because asSeenFrom produced a typeref of the shape T'#A where A referred to a symbol defined in a T of times past +// More precisely, the TypeRef case of TypeMap's mapOver correctly modified prefix +// from having an underlying type of { type A = Ain } to { type A = Int }, with a new symbol for A (now with info Int), +// but the symbol in the outer type ref wasn't co-evolved (so it still referred to the { type A = AIn } underlying the old prefix) +// coEvolveSym used to only look at prefixes that were directly RefinedTypes, but they could also be SingleTypes with an underlying RefinedType +class View[AIn](val in: ThingHolder.Alias[AIn]) { def f(p: in.A): in.A = p } +class SubView extends View[Int](IntThing) { override def f(p: in.A): in.A = p }
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