Fixes #4671. Error installing rubygems-bundler in 9.1.11.0.

jruby · Jun 14, 2017 · 83098f6 · 83098f6
1 parent 74f3233
commit 83098f6
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/core/src/main/java/org/jruby/ext/zlib/JZlibRubyGzipReader.java b/core/src/main/java/org/jruby/ext/zlib/JZlibRubyGzipReader.java
@@ -526,6 +526,10 @@ private boolean isEof() throws IOException {
         // compatible behavior.
         byte[] bytes = new byte[16];
         int read = bufferedStream.read(bytes, 0, bytes.length);
+
+        // We are already at EOF.
+        if (read == -1) return true;
+
         bufferedStream.unread(bytes, 0, read);
 
         return bufferedStream.available() == 0;