From c2366d4dc46b61ec29d3f2bfbb3d094f2f128044 Mon Sep 17 00:00:00 2001
From: Dmitry Trofimov <dmitry.trofimov@jetbrains.com>
Date: Fri, 2 Oct 2015 01:02:56 +0200
Subject: [PATCH] Message can be null.

---
 .../com/intellij/execution/ExecutionHelper.java   | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/platform/lang-impl/src/com/intellij/execution/ExecutionHelper.java b/platform/lang-impl/src/com/intellij/execution/ExecutionHelper.java
index e27d72707d75..94592406b54d 100644
--- a/platform/lang-impl/src/com/intellij/execution/ExecutionHelper.java
+++ b/platform/lang-impl/src/com/intellij/execution/ExecutionHelper.java
@@ -76,8 +76,7 @@ public class ExecutionHelper {
     @NotNull final Project myProject,
     @NotNull final List<? extends Exception> errors,
     @NotNull final String tabDisplayName,
-    @Nullable final VirtualFile file)
-  {
+    @Nullable final VirtualFile file) {
     showExceptions(myProject, errors, Collections.<Exception>emptyList(), tabDisplayName, file);
   }
 
@@ -86,8 +85,7 @@ public class ExecutionHelper {
     @NotNull final List<? extends Exception> errors,
     @NotNull final List<? extends Exception> warnings,
     @NotNull final String tabDisplayName,
-    @Nullable final VirtualFile file)
-  {
+    @Nullable final VirtualFile file) {
     if (ApplicationManager.getApplication().isUnitTestMode() && !errors.isEmpty()) {
       throw new RuntimeException(errors.get(0));
     }
@@ -133,12 +131,13 @@ public class ExecutionHelper {
     @NotNull final List<? extends Exception> exceptions,
     @NotNull ErrorViewPanel errorTreeView,
     @Nullable final VirtualFile file,
-    @NotNull final String defaultMessage)
-  {
+    @NotNull final String defaultMessage) {
     for (final Exception exception : exceptions) {
-      String[] messages = StringUtil.splitByLines(exception.getMessage());
+      String message = exception.getMessage();
+
+      String[] messages = StringUtil.isNotEmpty(message) ? StringUtil.splitByLines(message) : ArrayUtil.EMPTY_STRING_ARRAY;
       if (messages.length == 0) {
-        messages = new String[] { defaultMessage };
+        messages = new String[]{defaultMessage};
       }
       errorTreeView.addMessage(messageCategory, messages, file, -1, -1, null);
     }