From 8975a3bd9b67a3a54196943ab975fda4b53d57fe Mon Sep 17 00:00:00 2001
From: Brian Anderson <banderson@mozilla.com>
Date: Sat, 9 May 2015 02:11:18 -0700
Subject: [PATCH] Add an assert to opts::set_opts.

This function leaks if called more than once.
---
 components/util/opts.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/components/util/opts.rs b/components/util/opts.rs
index 5816ec313aa..d2599fb128d 100644
--- a/components/util/opts.rs
+++ b/components/util/opts.rs
@@ -425,6 +425,7 @@ static mut OPTIONS: *mut Opts = 0 as *mut Opts;
 
 pub fn set_opts(opts: Opts) {
     unsafe {
+        assert!(OPTIONS.is_null());
         let box_opts = box opts;
         OPTIONS = mem::transmute(box_opts);
     }