From a99736ede92f0aa0117e6a5ce175725568cba2b3 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Tue, 9 Sep 2008 22:24:25 +0000
Subject: [PATCH] fix win32 bug

---
 dtool/src/dtoolutil/pandaFileStreamBuf.cxx | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/dtool/src/dtoolutil/pandaFileStreamBuf.cxx b/dtool/src/dtoolutil/pandaFileStreamBuf.cxx
index 52bb00b543..1d6f9586aa 100644
--- a/dtool/src/dtoolutil/pandaFileStreamBuf.cxx
+++ b/dtool/src/dtoolutil/pandaFileStreamBuf.cxx
@@ -518,7 +518,13 @@ write_chars(const char *start, size_t length) {
   char *buffer = (char *)alloca(buffer_length);
 
   size_t write_length = encode_newlines(buffer, buffer_length, start, length);
-  return write_chars_raw(buffer, write_length);
+  if (write_length == write_chars_raw(buffer, write_length)) {
+    // Success.  Return the number of original characters.
+    return length;
+  }
+
+  // Error.  Pretend we wrote nothing.
+  return 0;
 }
 
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