From c77a4e59301206f74d4e6c8fc101fe0bc2d4fcda Mon Sep 17 00:00:00 2001
From: Tony Hannan <tony@10gen.com>
Date: Wed, 13 Oct 2010 10:14:37 -0400
Subject: [PATCH] SERVER-1902: Make Assertion failure JS_EncodeCharacters more
 verbose in log

---
 scripting/engine_spidermonkey.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripting/engine_spidermonkey.cpp b/scripting/engine_spidermonkey.cpp
index 048808fbb3a..7030a7e9e34 100644
--- a/scripting/engine_spidermonkey.cpp
+++ b/scripting/engine_spidermonkey.cpp
@@ -202,7 +202,8 @@ namespace mongo {
             // units, but experiments suggest 8bit units expected.  We allocate
             // enough memory that either will work.
 
-            assert( JS_EncodeCharacters( _context , s , srclen , dst , &len) );
+            if ( !JS_EncodeCharacters( _context , s , srclen , dst , &len) )
+                uasserted( 13498, str::stream() << "Not proper UTF-16: " << s);
 
             string ss( dst , len );
             free( dst );