From dc0fb52fcc2a9a1f44ab5921f09100826ba5d547 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20K=C3=A5re=20Alsaker?= <john.kare.alsaker@gmail.com>
Date: Sat, 3 Mar 2018 06:18:09 +0100
Subject: [PATCH] Require lints to be Send + Sync

---
 src/librustc/lint/mod.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/librustc/lint/mod.rs b/src/librustc/lint/mod.rs
index 1497be2d5ba0..2103a7d22b5b 100644
--- a/src/librustc/lint/mod.rs
+++ b/src/librustc/lint/mod.rs
@@ -31,7 +31,7 @@
 pub use self::Level::*;
 pub use self::LintSource::*;
 
-use rustc_data_structures::sync::Lrc;
+use rustc_data_structures::sync::{self, Lrc};
 
 use errors::{DiagnosticBuilder, DiagnosticId};
 use hir::def_id::{CrateNum, LOCAL_CRATE};
@@ -287,8 +287,9 @@ pub trait EarlyLintPass: LintPass {
 }
 
 /// A lint pass boxed up as a trait object.
-pub type EarlyLintPassObject = Box<dyn EarlyLintPass + 'static>;
-pub type LateLintPassObject = Box<dyn for<'a, 'tcx> LateLintPass<'a, 'tcx> + 'static>;
+pub type EarlyLintPassObject = Box<dyn EarlyLintPass + sync::Send + sync::Sync + 'static>;
+pub type LateLintPassObject = Box<dyn for<'a, 'tcx> LateLintPass<'a, 'tcx> + sync::Send
+                                                                           + sync::Sync + 'static>;
 
 /// Identifies a lint known to the compiler.
 #[derive(Clone, Copy, Debug)]