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authorodersky <odersky@gmail.com>2017-04-11 09:29:25 +0200
committerGitHub <noreply@github.com>2017-04-11 09:29:25 +0200
commit4ff656138a2e4e127b763adeee3f0f72d515f6b6 (patch)
treecd65d0f412217ccf5fb9cb082514fb6a0444e94b /compiler/src/dotty/tools/dotc/core
parent0bd782195b7bcaa2d270b6306fd02c8a649822e9 (diff)
parent0cf17c5f63b3ec37a05da920a81337067ac335db (diff)
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Merge pull request #2215 from dotty-staging/#2142
Fix #2142: Skolemize arguments of dependent methods if necessary
Diffstat (limited to 'compiler/src/dotty/tools/dotc/core')
-rw-r--r--compiler/src/dotty/tools/dotc/core/Types.scala5
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler/src/dotty/tools/dotc/core/Types.scala b/compiler/src/dotty/tools/dotc/core/Types.scala
index e7130ee2f..4c69c9484 100644
--- a/compiler/src/dotty/tools/dotc/core/Types.scala
+++ b/compiler/src/dotty/tools/dotc/core/Types.scala
@@ -107,10 +107,11 @@ object Types {
final def isValueTypeOrLambda: Boolean = isValueType || this.isInstanceOf[TypeLambda]
/** Does this type denote a stable reference (i.e. singleton type)? */
- @tailrec final def isStable(implicit ctx: Context): Boolean = stripTypeVar match {
- case tp: TermRef => tp.termSymbol.isStable && tp.prefix.isStable
+ final def isStable(implicit ctx: Context): Boolean = stripTypeVar match {
+ case tp: TermRef => tp.termSymbol.isStable && tp.prefix.isStable || tp.info.isStable
case _: SingletonType | NoPrefix => true
case tp: RefinedOrRecType => tp.parent.isStable
+ case tp: ExprType => tp.resultType.isStable
case _ => false
}