From c274459bab039e48c9fe71aa49979ac175ce8ea3 Mon Sep 17 00:00:00 2001
From: Sergey Pepyakin <s.pepyakin@gmail.com>
Date: Tue, 23 Jan 2018 16:57:09 +0300
Subject: [PATCH] Make Error: Sync + Send

---
 src/host.rs      |  2 +-
 src/tests/mod.rs | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/host.rs b/src/host.rs
index 09b6c85..ad5d854 100644
--- a/src/host.rs
+++ b/src/host.rs
@@ -34,7 +34,7 @@ impl<'a> RuntimeArgs<'a> {
 }
 
 /// Custom user error.
-pub trait HostError: 'static + ::std::fmt::Display + ::std::fmt::Debug {
+pub trait HostError: 'static + ::std::fmt::Display + ::std::fmt::Debug + Send + Sync {
 	#[doc(hidden)]
 	fn __private_get_type_id__(&self) -> TypeId {
 		TypeId::of::<Self>()
diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index fb33a01..c202910 100644
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -1,2 +1,15 @@
 mod host;
 mod wasm;
+
+use super::Error;
+
+fn assert_send<T: Send>() {}
+fn assert_sync<T: Sync>() {}
+fn assert_std_err_impl<T: ::std::error::Error>() {}
+
+#[test]
+fn assert_error_properties() {
+	assert_send::<Error>();
+	assert_sync::<Error>();
+	assert_std_err_impl::<Error>();
+}