From b439632a759447eb56a0190f6c838934bad1e3c7 Mon Sep 17 00:00:00 2001
From: panicbit <panicbit.dev@gmail.com>
Date: Sun, 4 Feb 2018 20:40:39 +0100
Subject: [PATCH] Unimplement Send/Sync for ::env::{Args,ArgsOs,Vars,VarsOs}

---
 src/libstd/env.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/libstd/env.rs b/src/libstd/env.rs
index 27bf326631fb0..c4946b6b2824d 100644
--- a/src/libstd/env.rs
+++ b/src/libstd/env.rs
@@ -723,6 +723,12 @@ pub fn args_os() -> ArgsOs {
     ArgsOs { inner: sys::args::args() }
 }
 
+#[stable(feature = "env_unimpl_send_sync", since = "1.25.0")]
+impl !Send for Args {}
+
+#[stable(feature = "env_unimpl_send_sync", since = "1.25.0")]
+impl !Sync for Args {}
+
 #[stable(feature = "env", since = "1.0.0")]
 impl Iterator for Args {
     type Item = String;
@@ -754,6 +760,12 @@ impl fmt::Debug for Args {
     }
 }
 
+#[stable(feature = "env_unimpl_send_sync", since = "1.25.0")]
+impl !Send for ArgsOs {}
+
+#[stable(feature = "env_unimpl_send_sync", since = "1.25.0")]
+impl !Sync for ArgsOs {}
+
 #[stable(feature = "env", since = "1.0.0")]
 impl Iterator for ArgsOs {
     type Item = OsString;