From 7c016ade8992d16c5cafabb4c912ff00d15b129c Mon Sep 17 00:00:00 2001
From: Nadya Zabrodina <Nadya.Zabrodina@jetbrains.com>
Date: Wed, 28 Oct 2015 17:16:30 +0300
Subject: [PATCH] [hg]: IDEA-146901 IOOBE if invoke MQ=>Go to patch for initial
 commit

---
 .../org/zmlx/hg4idea/action/mq/HgQGotoFromLogAction.java    | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/plugins/hg4idea/src/org/zmlx/hg4idea/action/mq/HgQGotoFromLogAction.java b/plugins/hg4idea/src/org/zmlx/hg4idea/action/mq/HgQGotoFromLogAction.java
index be680afd8259..8baea933d1aa 100644
--- a/plugins/hg4idea/src/org/zmlx/hg4idea/action/mq/HgQGotoFromLogAction.java
+++ b/plugins/hg4idea/src/org/zmlx/hg4idea/action/mq/HgQGotoFromLogAction.java
@@ -29,11 +29,15 @@ import org.zmlx.hg4idea.command.mq.HgQGotoCommand;
 import org.zmlx.hg4idea.command.mq.HgQPopCommand;
 import org.zmlx.hg4idea.repo.HgRepository;
 
+import java.util.List;
+
 public class HgQGotoFromLogAction extends HgMqAppliedPatchAction {
   @Override
   protected void actionPerformed(@NotNull final HgRepository repository, @NotNull final VcsFullCommitDetails commit) {
     final Project project = repository.getProject();
-    final Hash parentHash = commit.getParents().get(0);
+    List<Hash> parents = commit.getParents();
+    final Hash parentHash = parents.isEmpty() ? null : parents.get(0);
+
     final HgNameWithHashInfo parentPatchName = ContainerUtil.find(repository.getMQAppliedPatches(), new Condition<HgNameWithHashInfo>() {
       @Override
       public boolean value(HgNameWithHashInfo info) {