diff options
| -rw-r--r-- | src/compiler/scala/tools/nsc/matching/ParallelMatching.scala | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/compiler/scala/tools/nsc/matching/ParallelMatching.scala b/src/compiler/scala/tools/nsc/matching/ParallelMatching.scala index 7bcc73295f..8acbcc8835 100644 --- a/src/compiler/scala/tools/nsc/matching/ParallelMatching.scala +++ b/src/compiler/scala/tools/nsc/matching/ParallelMatching.scala @@ -333,11 +333,15 @@ trait ParallelMatching { /*block*/{ var xs = column var i = 0; + var last = -1; while(xs ne Nil) { // forall + if (last != -1) { + cunit.error(xs.head.pos, "unreachable code") + } strip(xs.head) match { case (pvars, p @ Literal(Constant(c:Int))) => sanity(p.pos, c , definedVars(xs.head)); insertTagIndexPair(c,i) case (pvars, p @ Literal(Constant(c:Char))) => sanity(p.pos, c.toInt, definedVars(xs.head)); insertTagIndexPair(c.toInt,i) - case (pvars, p ) if isDefaultPattern(p) => insertDefault(i,pvars) + case (pvars, p ) if isDefaultPattern(p) => last = i; insertDefault(i,pvars) } i += 1 xs = xs.tail |