"".unpack("u") blows up
-----------------------
Key: JRUBY-6052
URL: https://jira.codehaus.org/browse/JRUBY-6052
Project: JRuby
Issue Type: Bug
Reporter: Yusuke Endoh
Assignee: Thomas E Enebo
$ bin/jruby --1.9 -e 'p "".unpack("u")'
Buffer.java:474:in `nextGetIndex': java.nio.BufferUnderflowException
*snip*
diff --git a/src/org/jruby/util/Pack.java b/src/org/jruby/util/Pack.java
index 8c38d5d..a1bb2f8 100644
--- a/src/org/jruby/util/Pack.java
+++ b/src/org/jruby/util/Pack.java
@@ -999,9 +999,9 @@ public class Pack {
int length = encode.remaining() * 3 / 4;
byte[] lElem = new byte[length];
int index = 0;
- int s;
+ int s = 0;
int total = 0;
- s = encode.get();
+ if (length > 0) s = encode.get();
while (encode.hasRemaining() && s > ' ' && s < 'a') {
int a, b, c, d;
byte[] hunk = new byte[3];
--
Yusuke Endoh <m...@tsg.ne.jp>
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