From ebb933379fc7cb68b6cbba1cc59e08be8263ae91 Mon Sep 17 00:00:00 2001
From: Bruno Bieth <biethb@gmail.com>
Date: Mon, 22 Jun 2015 16:30:31 +0200
Subject: SI-9253 avoid IndexOutOfBoundsException in
 TypeMaps.correspondingTypeArgument

---
 src/reflect/scala/reflect/internal/tpe/TypeMaps.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/reflect/scala/reflect/internal/tpe/TypeMaps.scala b/src/reflect/scala/reflect/internal/tpe/TypeMaps.scala
index c705ca7069..15a87200f1 100644
--- a/src/reflect/scala/reflect/internal/tpe/TypeMaps.scala
+++ b/src/reflect/scala/reflect/internal/tpe/TypeMaps.scala
@@ -561,7 +561,7 @@ private[internal] trait TypeMaps {
                |  tparams  ${rhsSym.typeParams map own_s mkString ", "}
                |"""
 
-        if (argIndex < 0)
+        if (!rhsArgs.isDefinedAt(argIndex))
           abort(s"Something is wrong: cannot find $lhs in applied type $rhs\n" + explain)
         else {
           val targ   = rhsArgs(argIndex)
-- 
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