Fix ranking logic

scala · Aug 5, 2024 · e491c87 · e491c87
1 parent 6b1f49f
commit e491c87
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Showing 2 changed files with 4 additions and 3 deletions.
diff --git a/compiler/src/dotty/tools/dotc/typer/Implicits.scala b/compiler/src/dotty/tools/dotc/typer/Implicits.scala
@@ -1368,9 +1368,9 @@ trait Implicits:
                       |Previous choice          : ${choice(prev)}
                       |New choice from Scala 3.7: ${choice(cmp)}""")
                 cmp
-            else cmp max prev
-              // When ranking, we keep the better of cmp and prev, which ends up retaining a candidate
-              // if it is retained in either version.
+            else if cmp != prev then
+              0 // When ranking, we retain a candidate if it is retained in either version.
+            else cmp
           else cmp
       end compareAlternatives
 

diff --git a/tests/pos/i15264.scala b/tests/pos/i15264.scala
@@ -1,3 +1,4 @@
+import language.`3.7`
 object priority:
     // lower number = higher priority
     class Prio0 extends Prio1