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Diffstat (limited to 'src')
| -rw-r--r-- | src/compiler/scala/tools/nsc/typechecker/Typers.scala | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/compiler/scala/tools/nsc/typechecker/Typers.scala b/src/compiler/scala/tools/nsc/typechecker/Typers.scala index 34ba8b46f9..d1d6feae97 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Typers.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Typers.scala @@ -3887,8 +3887,16 @@ trait Typers extends Modes with Adaptations with Tags { if (vd.symbol.tpe.isVolatile) AbstractionFromVolatileTypeError(vd) val tpt1 = typedType(tree.tpt, mode) - existentialTransform(tree.whereClauses map (_.symbol), tpt1.tpe)((tparams, tp) => - TypeTree(newExistentialType(tparams, tp)) setOriginal tree + existentialTransform(tree.whereClauses map (_.symbol), tpt1.tpe)((tparams, tp) => { + val original = tpt1 match { + case tpt : TypeTree => atPos(tree.pos)(ExistentialTypeTree(tpt.original, tree.whereClauses)) + case _ => { + debuglog(s"cannot reconstruct the original for $tree, because $tpt1 is not a TypeTree") + tree + } + } + TypeTree(newExistentialType(tparams, tp)) setOriginal original + } ) } |