From 4b63b5646141c8cd030690b68cbeb323b7ed8385 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Wed, 7 Aug 2002 21:46:24 +0000
Subject: [PATCH] ok to remove files never added

---
 panda/src/express/multifile.cxx | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/panda/src/express/multifile.cxx b/panda/src/express/multifile.cxx
index 012c999d93..072b568729 100644
--- a/panda/src/express/multifile.cxx
+++ b/panda/src/express/multifile.cxx
@@ -1441,13 +1441,15 @@ rewrite_index_data_start(ostream &write, Multifile *multifile) {
 ////////////////////////////////////////////////////////////////////
 void Multifile::Subfile::
 rewrite_index_flags(ostream &write) {
-  nassertv(_index_start != (streampos)0);
-
-  static const size_t flags_offset = 4 + 4 + 4;
-  size_t flags_pos = _index_start + (streampos)flags_offset;
-  write.seekp(flags_pos);
-  nassertv(!write.fail());
-
-  StreamWriter writer(write);
-  writer.add_uint16(_flags);
+  // If the subfile has never even been recorded to disk, we don't
+  // need to do anything at all in this function.
+  if (_index_start != (streampos)0) {
+    static const size_t flags_offset = 4 + 4 + 4;
+    size_t flags_pos = _index_start + (streampos)flags_offset;
+    write.seekp(flags_pos);
+    nassertv(!write.fail());
+    
+    StreamWriter writer(write);
+    writer.add_uint16(_flags);
+  }
 }