From cbba880bd437449490c70dc4c4c00d6aa2930c24 Mon Sep 17 00:00:00 2001
From: Eliot Horowitz <eliot@10gen.com>
Date: Mon, 29 Aug 2011 11:41:16 -0400
Subject: [PATCH] fix double comparision of -0 and 0 for v1 indexes SERVER-3682

---
 db/key.cpp             | 6 +++++-
 dbtests/btreetests.inl | 2 --
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/db/key.cpp b/db/key.cpp
index 35231752c0c..06936959e6a 100644
--- a/db/key.cpp
+++ b/db/key.cpp
@@ -602,11 +602,15 @@ namespace mongo {
                     return false;
                 l += 4; r += 4;
             case cdate:
-            case cdouble:
                 if( *((unsigned long long *) l) != *((unsigned long long *) r) )
                     return false;
                 l += 8; r += 8;
                 break;
+            case cdouble:
+                if( *((double *) l) != *((double *) r) )
+                    return false;
+                l += 8; r += 8;
+                break;
             case cstring:
                 {
                     unsigned sz = ((unsigned) *l) + 1;
diff --git a/dbtests/btreetests.inl b/dbtests/btreetests.inl
index fe1ba902d97..017c54e57c3 100644
--- a/dbtests/btreetests.inl
+++ b/dbtests/btreetests.inl
@@ -1602,7 +1602,6 @@
     class SignedZeroDuplication : public Base {
     public:
         void run() {
-            if ( 0 ) { // SERVER-3682
             ASSERT_EQUALS( 0.0, -0.0 );
             DBDirectClient c;
             c.ensureIndex( ns(), BSON( "b" << 1 ), true );
@@ -1610,7 +1609,6 @@
             c.insert( ns(), BSON( "b" << 1.0 ) );
             c.update( ns(), BSON( "b" << 1.0 ), BSON( "b" << -0.0 ) );
             ASSERT_EQUALS( 1U, c.count( ns(), BSON( "b" << 0.0 ) ) );
-            }
         }
     };