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-rw-r--r--src/dotty/tools/dotc/core/Constraint.scala6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/dotty/tools/dotc/core/Constraint.scala b/src/dotty/tools/dotc/core/Constraint.scala
index d6e1589e0..bc0d476a9 100644
--- a/src/dotty/tools/dotc/core/Constraint.scala
+++ b/src/dotty/tools/dotc/core/Constraint.scala
@@ -92,11 +92,13 @@ abstract class Constraint extends Showable {
*/
def updateEntry(param: PolyParam, tp: Type)(implicit ctx: Context): This
- /** A constraint that includes the relationship `p1 <: p2`
+ /** A constraint that includes the relationship `p1 <: p2`.
+ * `<:` relationships between parameters ("edges") are propagated, but
+ * non-parameter bounds are left alone.
*/
def addLess(p1: PolyParam, p2: PolyParam)(implicit ctx: Context): This
- /** A constraint resulting by adding p2 = p1 to this constraint, and at the same
+ /** A constraint resulting from adding p2 = p1 to this constraint, and at the same
* time transferring all bounds of p2 to p1
*/
def unify(p1: PolyParam, p2: PolyParam)(implicit ctx: Context): This