From 1d3d86023e9c7237103a4b3d9251c0c7748b8805 Mon Sep 17 00:00:00 2001
From: Nikolay Krasko <nikolay.krasko@jetbrains.com>
Date: Mon, 10 Dec 2018 16:21:44 +0300
Subject: [PATCH] Log NPE from getting operation reference in binary expression
 (EA-129499)

---
 .../org/jetbrains/kotlin/psi/KtBinaryExpression.java   | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/compiler/psi/src/org/jetbrains/kotlin/psi/KtBinaryExpression.java b/compiler/psi/src/org/jetbrains/kotlin/psi/KtBinaryExpression.java
index 6e5571fb9dd..88c228ccea7 100644
--- a/compiler/psi/src/org/jetbrains/kotlin/psi/KtBinaryExpression.java
+++ b/compiler/psi/src/org/jetbrains/kotlin/psi/KtBinaryExpression.java
@@ -23,6 +23,8 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.KtNodeTypes;
 
+import java.util.Arrays;
+
 public class KtBinaryExpression extends KtExpressionImpl implements KtOperationExpression {
     public KtBinaryExpression(@NotNull ASTNode node) {
         super(node);
@@ -64,7 +66,12 @@ public class KtBinaryExpression extends KtExpressionImpl implements KtOperationE
     @Override
     @NotNull
     public KtOperationReferenceExpression getOperationReference() {
-        return (KtOperationReferenceExpression) findChildByType(KtNodeTypes.OPERATION_REFERENCE);
+        PsiElement operationReference = findChildByType(KtNodeTypes.OPERATION_REFERENCE);
+        if (operationReference == null) {
+            throw new NullPointerException("No operation reference for binary expression: " + Arrays.toString(getChildren()));
+        }
+
+        return (KtOperationReferenceExpression) operationReference;
     }
 
     @NotNull
@@ -72,3 +79,4 @@ public class KtBinaryExpression extends KtExpressionImpl implements KtOperationE
         return getOperationReference().getReferencedNameElementType();
     }
 }
+