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| author | Martin Odersky <odersky@gmail.com> | 2016-06-14 15:46:06 +0200 |
|---|---|---|
| committer | Martin Odersky <odersky@gmail.com> | 2016-07-11 13:35:03 +0200 |
| commit | 3490e018e8b11a9d30629e8d415cbae5efd4abf4 (patch) | |
| tree | a7c95a35071e7d5e6f8af7c41ea6d966ef2ba676 /src/dotty/tools/dotc/core/ConstraintHandling.scala | |
| parent | 60d81f81ddfc85719fd303e8d15d3891adbf4dfd (diff) | |
| download | dotty-3490e018e8b11a9d30629e8d415cbae5efd4abf4.tar.gz dotty-3490e018e8b11a9d30629e8d415cbae5efd4abf4.tar.bz2 dotty-3490e018e8b11a9d30629e8d415cbae5efd4abf4.zip | |
Make Constraint#bounds work for aliases
Bounds did not do the right thing if a constrain parameter
was aliased.
Diffstat (limited to 'src/dotty/tools/dotc/core/ConstraintHandling.scala')
| -rw-r--r-- | src/dotty/tools/dotc/core/ConstraintHandling.scala | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/dotty/tools/dotc/core/ConstraintHandling.scala b/src/dotty/tools/dotc/core/ConstraintHandling.scala index 00b8a5d25..66767d58a 100644 --- a/src/dotty/tools/dotc/core/ConstraintHandling.scala +++ b/src/dotty/tools/dotc/core/ConstraintHandling.scala @@ -193,9 +193,9 @@ trait ConstraintHandling { } /** The current bounds of type parameter `param` */ - final def bounds(param: PolyParam): TypeBounds = constraint.entry(param) match { - case bounds: TypeBounds => bounds - case _ => param.binder.paramBounds(param.paramNum) + final def bounds(param: PolyParam): TypeBounds = { + val e = constraint.entry(param) + if (e.exists) e.bounds else param.binder.paramBounds(param.paramNum) } /** Add polytype `pt`, possibly with type variables `tvars`, to current constraint |