From d99499f3f07c22a4b5f39bc84d3b60fa400921e0 Mon Sep 17 00:00:00 2001
From: Rustam Vishnyakov <rustam.vishnyakov@jetbrains.com>
Date: Tue, 11 Jun 2019 12:11:30 +0300
Subject: [PATCH] IDEA-215731 IAE at
 com.intellij.openapi.util.text.StringUtil.escapeXmlEntities

GitOrigin-RevId: dbd51d122231f28022bf3c243f947b4607825d6f
---
 .../codeInsight/documentation/DocumentationComponent.java     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java
index a5e87a3f9279..581da668b1ab 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java
@@ -1024,7 +1024,9 @@ public class DocumentationComponent extends JPanel implements Disposable, DataPr
       return null;
     }
 
-    String title = StringUtil.escapeXmlEntities(manager.getTitle(element));
+    String title = manager.getTitle(element);
+    if (title == null) return null;
+    title = StringUtil.escapeXmlEntities(title);
     if (externalUrl == null) {
       List<String> urls = provider.getUrlFor(element, originalElement);
       if (urls != null) {