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-rw-r--r--lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java23
1 files changed, 16 insertions, 7 deletions
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
index 2830a7842e..4faae2a157 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
@@ -922,8 +922,22 @@ public class OtpOutputStream extends ByteArrayOutputStream {
oos.writeTo(dos);
dos.close(); // note: closes this, too!
} catch (final IllegalArgumentException e) {
- // discard further un-compressed data
- // -> if not called, there may be memory leaks!
+ /*
+ * Discard further un-compressed data (if not called, there may
+ * be memory leaks).
+ *
+ * After calling java.util.zip.Deflater.end(), the deflater
+ * should not be used anymore, not even the close() method of
+ * dos. Calling dos.close() before def.end() is prevented since
+ * an unfinished DeflaterOutputStream will try to deflate its
+ * unprocessed data to the (fixed) byte array which is prevented
+ * by ensureCapacity() and would also unnecessarily process
+ * further data that is discarded anyway.
+ *
+ * Since we are re-using the byte array of this object below, we
+ * must not call close() in e.g. a finally block either (with or
+ * without a call to def.end()).
+ */
def.end();
// could not make the value smaller than originally
// -> reset to starting count, write uncompressed
@@ -942,11 +956,6 @@ public class OtpOutputStream extends ByteArrayOutputStream {
"Intermediate stream failed for Erlang object " + o);
} finally {
fixedSize = Integer.MAX_VALUE;
- try {
- dos.close();
- } catch (final IOException e) {
- // ignore
- }
}
}
}