From 31fb723776347641f5607128462b58f3b634bb0f Mon Sep 17 00:00:00 2001
From: Samir Naik <samir.naik@gmail.com>
Date: Mon, 8 Oct 2007 21:56:03 +0000
Subject: [PATCH] add debugging for datagramIterator AI crash

---
 panda/src/express/datagramIterator.I | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/panda/src/express/datagramIterator.I b/panda/src/express/datagramIterator.I
index 8047d75390..3b1b816f48 100644
--- a/panda/src/express/datagramIterator.I
+++ b/panda/src/express/datagramIterator.I
@@ -489,6 +489,13 @@ INLINE void DatagramIterator::
 skip_bytes(size_t size) {
   nassertv(_datagram != (const Datagram *)NULL);
   nassertv((int)size >= 0);
+#ifndef NDEBUG
+  if (_current_index + size > _datagram->get_length()) {
+     nout << "datagram overflow: current_index = " << _current_index
+          << " size = " << size << " length = " << _datagram->get_length() << "\n";
+    _datagram->dump_hex(nout);
+  }
+#endif
   nassertv(_current_index + size <= _datagram->get_length());
   _current_index += size;
 }