Use ownersIterator instead of outersIterator in checkOwner message

Author: mbovel

compiler/src/dotty/tools/dotc/transform/TreeChecker.scala

@@ -572,7 +572,8 @@ object TreeChecker {
         ctxOwner.isWeakOwner && ownerMatches(symOwner, ctxOwner.owner)
       assert(ownerMatches(tree.symbol.owner, ctx.owner),
         i"bad owner; ${tree.symbol} has owner ${tree.symbol.owner}, expected was ${ctx.owner}\n" +
-        i"owner chain = ${tree.symbol.ownersIterator.toList}%, %, ctxOwners = ${ctx.outersIterator.map(_.owner).toList}%, %")
+        i"owner chain = ${tree.symbol.ownersIterator.toList}%, %\n" +
+        i"ctx owners = ${ctx.owner.ownersIterator.toList}%, %")
     }
 
     private def checkParents(tree: untpd.TypeDef)(using Context): Unit = {
@@ -888,4 +889,4 @@ object TreeChecker {
     case _ =>
       Nil
   }
-}
+}

tests/neg-macros/wrong-owner.check

@@ -16,6 +16,7 @@
   |
   |Error:
   |assertion failed: bad owner; method toString has owner class String, expected was class Foo
-  |owner chain = method toString, class String, package java.lang, package java, package <root>, ctxOwners = class Foo, class Foo, package <empty>, package <empty>, package <empty>, package <root>, package <root>, package <root>, package <root>, package <root>, package <root>, package <root>, <none>, <none>, <none>, <none>, <none>
+  |owner chain = method toString, class String, package java.lang, package java, package <root>
+  |ctx owners = class Foo, package <empty>, package <root>
   |
   |stacktrace available when compiling with `-Ydebug`