From e1d871e2d97f8afe056642c6afc433c7d1d1ee1d Mon Sep 17 00:00:00 2001
From: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Date: Sun, 23 Jun 2019 15:14:04 +0300
Subject: Remove built-in derive macros `Send` and `Sync`

---
 src/libsyntax_ext/deriving/bounds.rs | 8 --------
 src/libsyntax_ext/deriving/mod.rs    | 2 --
 2 files changed, 10 deletions(-)

(limited to 'src/libsyntax_ext')

diff --git a/src/libsyntax_ext/deriving/bounds.rs b/src/libsyntax_ext/deriving/bounds.rs
index c7b805e0bdc..d5b8a00c75b 100644
--- a/src/libsyntax_ext/deriving/bounds.rs
+++ b/src/libsyntax_ext/deriving/bounds.rs
@@ -6,14 +6,6 @@ use syntax::ast::MetaItem;
 use syntax::ext::base::{Annotatable, ExtCtxt};
 use syntax_pos::Span;
 
-pub fn expand_deriving_unsafe_bound(cx: &mut ExtCtxt<'_>,
-                                    span: Span,
-                                    _: &MetaItem,
-                                    _: &Annotatable,
-                                    _: &mut dyn FnMut(Annotatable)) {
-    cx.span_err(span, "this unsafe trait should be implemented explicitly");
-}
-
 pub fn expand_deriving_copy(cx: &mut ExtCtxt<'_>,
                             span: Span,
                             mitem: &MetaItem,
diff --git a/src/libsyntax_ext/deriving/mod.rs b/src/libsyntax_ext/deriving/mod.rs
index e75eff2e857..aa9913d436c 100644
--- a/src/libsyntax_ext/deriving/mod.rs
+++ b/src/libsyntax_ext/deriving/mod.rs
@@ -111,8 +111,6 @@ derive_traits! {
 
     "Default" => default::expand_deriving_default,
 
-    "Send" => bounds::expand_deriving_unsafe_bound,
-    "Sync" => bounds::expand_deriving_unsafe_bound,
     "Copy" => bounds::expand_deriving_copy,
 
     // deprecated
-- 
cgit 1.4.1-3-g733a5