diff --git a/compiler/src/dotty/tools/dotc/transform/CheckUnused.scala b/compiler/src/dotty/tools/dotc/transform/CheckUnused.scala index 0eeec0f3cbec..f40993314257 100644 --- a/compiler/src/dotty/tools/dotc/transform/CheckUnused.scala +++ b/compiler/src/dotty/tools/dotc/transform/CheckUnused.scala @@ -661,8 +661,10 @@ object CheckUnused: val simpleSelections = qual.tpe.member(sym.name).alternatives val typeSelections = sels.flatMap(n => qual.tpe.member(n.name.toTypeName).alternatives) val termSelections = sels.flatMap(n => qual.tpe.member(n.name.toTermName).alternatives) + val sameTermPath = qual.isTerm && sym.exists && sym.owner.isType && qual.tpe.typeSymbol == sym.owner.asType val selectionsToDealias = typeSelections ::: termSelections - val qualHasSymbol = simpleSelections.map(_.symbol).contains(sym) || (simpleSelections ::: selectionsToDealias).map(_.symbol).map(dealias).contains(dealiasedSym) + val renamedSelection = if sameTermPath then sels.find(sel => sel.imported.name == sym.name) else None + val qualHasSymbol = simpleSelections.map(_.symbol).contains(sym) || (simpleSelections ::: selectionsToDealias).map(_.symbol).map(dealias).contains(dealiasedSym) || renamedSelection.isDefined def selector = sels.find(sel => (sel.name.toTermName == sym.name || sel.name.toTypeName == sym.name) && symName.map(n => n.toTermName == sel.rename).getOrElse(true)) def dealiasedSelector = if(isDerived) sels.flatMap(sel => selectionsToDealias.map(m => (sel, m.symbol))).collect { case (sel, sym) if dealias(sym) == dealiasedSym => sel @@ -672,7 +674,7 @@ object CheckUnused: else None def wildcard = sels.find(sel => sel.isWildcard && ((sym.is(Given) == sel.isGiven && sel.bound.isEmpty) || sym.is(Implicit))) if qualHasSymbol && (!isAccessible || sym.isRenamedSymbol(symName)) && sym.exists then - selector.orElse(dealiasedSelector).orElse(givenSelector).orElse(wildcard) // selector with name or wildcard (or given) + selector.orElse(dealiasedSelector).orElse(givenSelector).orElse(wildcard).orElse(renamedSelection) // selector with name or wildcard (or given) else None diff --git a/tests/pos-special/fatal-warnings/i18366.scala b/tests/pos-special/fatal-warnings/i18366.scala new file mode 100644 index 000000000000..bd25d607e897 --- /dev/null +++ b/tests/pos-special/fatal-warnings/i18366.scala @@ -0,0 +1,10 @@ +// scalac: -Wunused:all + +trait Builder { + def foo(): Unit +} + +def repro = + val builder: Builder = ??? + import builder.{foo => bar} + bar() \ No newline at end of file