From ab52f220c298a290b16c9a3820773cb75e5c0261 Mon Sep 17 00:00:00 2001
From: konsoletyper <konsoletyper@gmail.com>
Date: Wed, 11 Mar 2015 20:33:13 +0300
Subject: [PATCH] Prevent async assigment from optimization

---
 .../src/main/java/org/teavm/javascript/OptimizingVisitor.java  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/teavm-core/src/main/java/org/teavm/javascript/OptimizingVisitor.java b/teavm-core/src/main/java/org/teavm/javascript/OptimizingVisitor.java
index f155919c4..718c86bbc 100644
--- a/teavm-core/src/main/java/org/teavm/javascript/OptimizingVisitor.java
+++ b/teavm-core/src/main/java/org/teavm/javascript/OptimizingVisitor.java
@@ -132,6 +132,9 @@ class OptimizingVisitor implements StatementVisitor, ExprVisitor {
             return;
         }
         AssignmentStatement assignment = (AssignmentStatement)last;
+        if (assignment.isAsync()) {
+            return;
+        }
         if (!(assignment.getLeftValue() instanceof VariableExpr)) {
             return;
         }