From 3121f1ad5c05d8671afa839713b07da4895c3f36 Mon Sep 17 00:00:00 2001
From: Andrey Breslav <andrey.breslav@jetbrains.com>
Date: Wed, 17 Oct 2012 12:20:40 +0400
Subject: [PATCH] Incorrect comparison fixed

---
 .../lang/types/expressions/PatternMatchingTypingVisitor.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/PatternMatchingTypingVisitor.java b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/PatternMatchingTypingVisitor.java
index 637250f8568..fe2e144abba 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/PatternMatchingTypingVisitor.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/PatternMatchingTypingVisitor.java
@@ -293,7 +293,7 @@ public class PatternMatchingTypingVisitor extends ExpressionTypingVisitor {
         }
 
         // check if the pattern is essentially a 'null' expression
-        if (type == KotlinBuiltIns.getInstance().getNullableNothingType() && !subjectType.isNullable()) {
+        if (KotlinBuiltIns.getInstance().isNullableNothing(type) && !subjectType.isNullable()) {
             context.trace.report(SENSELESS_NULL_IN_WHEN.on(reportErrorOn));
         }
     }