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Diffstat (limited to 'compiler/src/dotty/tools/dotc/typer/Typer.scala')
| -rw-r--r-- | compiler/src/dotty/tools/dotc/typer/Typer.scala | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/src/dotty/tools/dotc/typer/Typer.scala b/compiler/src/dotty/tools/dotc/typer/Typer.scala index ec4c135f7..48636c27c 100644 --- a/compiler/src/dotty/tools/dotc/typer/Typer.scala +++ b/compiler/src/dotty/tools/dotc/typer/Typer.scala @@ -1039,7 +1039,9 @@ class Typer extends Namer with TypeAssigner with Applications with Implicits wit for (refinement <- refinements1) { // TODO: get clarity whether we want to enforce these conditions typr.println(s"adding refinement $refinement") checkRefinementNonCyclic(refinement, refineCls, seen) - } + val rsym = refinement.symbol + if (rsym.info.isInstanceOf[PolyType] && rsym.allOverriddenSymbols.isEmpty) + ctx.error(i"polymorphic refinement $rsym without matching type in parent $tpt1 is no longer allowed", refinement.pos) } assignType(cpy.RefinedTypeTree(tree)(tpt1, refinements1), tpt1, refinements1, refineCls) } |