From f14990eaebd9c202eb3fa50c568172fccad5e6b9 Mon Sep 17 00:00:00 2001
From: Alexey Andreev <konsoletyper@gmail.com>
Date: Sun, 26 Nov 2017 20:18:39 +0300
Subject: [PATCH] Fix bug in base64 encoder

---
 .../src/main/java/org/teavm/classlib/impl/Base64Impl.java     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/classlib/src/main/java/org/teavm/classlib/impl/Base64Impl.java b/classlib/src/main/java/org/teavm/classlib/impl/Base64Impl.java
index 32bb7dc2e..c4d480b52 100644
--- a/classlib/src/main/java/org/teavm/classlib/impl/Base64Impl.java
+++ b/classlib/src/main/java/org/teavm/classlib/impl/Base64Impl.java
@@ -118,9 +118,9 @@ public final class Base64Impl {
         int j;
         for (j = 0; j < triples;) {
             output[i++] = encode((byte) (data[j] >>> 2));
-            output[i++] = encode((byte) ((data[j] << 4) | (data[j + 1] >>> 4)));
+            output[i++] = encode((byte) ((data[j] << 4) | ((data[j + 1] & 0xFF) >>> 4)));
             ++j;
-            output[i++] = encode((byte) ((data[j] << 2) | (data[j + 1] >>> 6)));
+            output[i++] = encode((byte) ((data[j] << 2) | ((data[j + 1] & 0xFF) >>> 6)));
             ++j;
             output[i++] = encode(data[j]);
             ++j;