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Fix #3591: fix paramInfoAsSeenFrom for type lambdas #3601

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Merged
merged 1 commit into from
Nov 30, 2017
Merged

Fix #3591: fix paramInfoAsSeenFrom for type lambdas #3601

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2 changes: 1 addition & 1 deletion compiler/src/dotty/tools/dotc/core/Types.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -3060,7 +3060,7 @@ object Types {
def isTypeParam(implicit ctx: Context) = tl.paramNames.head.isTypeName
def paramName(implicit ctx: Context) = tl.paramNames(n)
def paramInfo(implicit ctx: Context) = tl.paramInfos(n)
def paramInfoAsSeenFrom(pre: Type)(implicit ctx: Context) = paramInfo
def paramInfoAsSeenFrom(pre: Type)(implicit ctx: Context) = paramInfo.asSeenFrom(pre, pre.classSymbol)
def paramInfoOrCompleter(implicit ctx: Context): Type = paramInfo
def paramVariance(implicit ctx: Context): Int = tl.paramNames(n).variance
def paramRef(implicit ctx: Context): Type = tl.paramRefs(n)
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9 changes: 9 additions & 0 deletions tests/pos/i3591.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,9 @@
class Foo {
class A

type Bla[X <: A] = X
}

class Bar extends Foo {
val y: Bla[A] = ???
}