From d7a3bec6d779aca97c20286383f6ce2ae8647da5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Wed, 13 Sep 2017 19:52:49 +0200
Subject: [PATCH] style: Add a comment about why the raw pointer is ok.

---
 components/style/stylesheet_set.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/components/style/stylesheet_set.rs b/components/style/stylesheet_set.rs
index 2611208d99e..328237ccbae 100644
--- a/components/style/stylesheet_set.rs
+++ b/components/style/stylesheet_set.rs
@@ -115,6 +115,8 @@ where
 {
     guard: &'a SharedRwLockReadGuard<'b>,
     origins_dirty: OriginSetIterator,
+    // NB: Bound to the StylesheetSet lifetime when constructed, see
+    // StylesheetSet::flush.
     collections: *mut PerOrigin<SheetCollection<S>>,
     current: Option<slice::IterMut<'a, StylesheetSetEntry<S>>>,
     origin_data_validity: PerOrigin<OriginValidity>,