SERVER-6124: $unset may create a nested field if it doesn't exist

1 files changed, 6 insertions, 1 deletions

diff --git a/jstests/update3.js b/jstests/update3.js
index 264172a5c26..995c6e67b45 100644
--- a/jstests/update3.js
+++ b/jstests/update3.js
@@ -20,4 +20,9 @@ assert.eq( 5, f.findOne().a.b , "C" );
 f.drop();
 f.save( {'_id':0} );
 f.update( {}, {$set:{'_id':5}} );
-assert.eq( 0, f.findOne()._id , "D" );
\ No newline at end of file
+assert.eq( 0, f.findOne()._id , "D" );
+
+f.drop();
+f.save({_id:1, a:1})
+f.update({}, {$unset:{"a":1, "b.c":1}})
+assert.docEq(f.findOne(), {_id:1}, "E")
\ No newline at end of file