From a75966e3ccacf39c41776a94ad654492c3116666 Mon Sep 17 00:00:00 2001
From: Ms2ger <ms2ger@gmail.com>
Date: Mon, 10 Mar 2014 09:59:15 +0100
Subject: [PATCH] In Int32Value, cast to u32 before casting to u64.

Casting to u64 directly is equivalent to first casting to i64, which does
sign extension. For negative values, this fills the highest 32 bits with
ones rather than the zeros we need.
---
 jsval.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jsval.rs b/jsval.rs
index 523f278f1..a58a4190d 100644
--- a/jsval.rs
+++ b/jsval.rs
@@ -81,7 +81,7 @@ pub fn UndefinedValue() -> JSVal {
 
 #[inline(always)]
 pub fn Int32Value(i: i32) -> JSVal {
-    BuildJSVal(JSVAL_TAG_INT32, i as u64)
+    BuildJSVal(JSVAL_TAG_INT32, i as u32 as u64)
 }
 
 #[inline(always)]