From 299485eb96b578ab39a5c4b43a9cc2104ca8591d Mon Sep 17 00:00:00 2001
From: Alexey Andreev <Alexey.Andreev@jetbrains.com>
Date: Fri, 17 Mar 2017 17:19:28 +0300
Subject: [PATCH] Fix bug in generation of block labels

---
 .../teavm/backend/javascript/rendering/StatementRenderer.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/java/org/teavm/backend/javascript/rendering/StatementRenderer.java b/core/src/main/java/org/teavm/backend/javascript/rendering/StatementRenderer.java
index ab088d7ce..68d684967 100644
--- a/core/src/main/java/org/teavm/backend/javascript/rendering/StatementRenderer.java
+++ b/core/src/main/java/org/teavm/backend/javascript/rendering/StatementRenderer.java
@@ -315,7 +315,7 @@ public class StatementRenderer implements ExprVisitor, StatementVisitor {
     private String generateBlockId(int index) {
         int mappedIndex;
         while (blockIds.size() <= index) {
-            mappedIndex = blockIndexMap.isEmpty() ? -1 : blockIndexMap.get(blockIds.size());
+            mappedIndex = blockIndexMap.isEmpty() ? -1 : blockIndexMap.get(blockIds.size() - 1);
             mappedIndex++;
             while (RenderingUtil.KEYWORDS.contains(RenderingUtil.indexToId(mappedIndex))) {
                 mappedIndex++;