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Diffstat (limited to 'src/compiler')
| -rw-r--r-- | src/compiler/scala/tools/nsc/typechecker/Infer.scala | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/compiler/scala/tools/nsc/typechecker/Infer.scala b/src/compiler/scala/tools/nsc/typechecker/Infer.scala index 688dcd91ac..e99c31374e 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Infer.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Infer.scala @@ -1104,7 +1104,9 @@ trait Infer { try { // debuglog("TVARS "+ (tvars map (_.constr))) // look at the argument types of the primary constructor corresponding to the pattern - val variances = undetparams map varianceInType(ctorTp.paramTypes.headOption getOrElse ctorTp) + val variances = + if (ctorTp.paramTypes.isEmpty) undetparams map varianceInType(ctorTp) + else undetparams map varianceInTypes(ctorTp.paramTypes) val targs = solvedTypes(tvars, undetparams, variances, true, lubDepth(List(resTp, pt))) // checkBounds(tree, NoPrefix, NoSymbol, undetparams, targs, "inferred ") // no checkBounds here. If we enable it, test bug602 fails. |