From b293bbaba007659495025b7db945684bb1fa5b71 Mon Sep 17 00:00:00 2001
From: Mara Bos <m-ou.se@m-ou.se>
Date: Sat, 9 Jan 2021 19:24:23 +0000
Subject: [PATCH] Don't set builtin_name for builtin macro implementations.

This used to be necessary for `is_builtin` in the past, but is no longer required.

Co-authored-by: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
---
 compiler/rustc_builtin_macros/src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/rustc_builtin_macros/src/lib.rs b/compiler/rustc_builtin_macros/src/lib.rs
index 774a13303bff5..ed76d51231d0b 100644
--- a/compiler/rustc_builtin_macros/src/lib.rs
+++ b/compiler/rustc_builtin_macros/src/lib.rs
@@ -48,7 +48,7 @@ pub fn register_builtin_macros(resolver: &mut dyn ResolverExpand, edition: Editi
     let mut register = |name, kind| {
         resolver.register_builtin_macro(
             Ident::with_dummy_span(name),
-            SyntaxExtension { builtin_name: Some(name), ..SyntaxExtension::default(kind, edition) },
+            SyntaxExtension::default(kind, edition),
         )
     };
     macro register_bang($($name:ident: $f:expr,)*) {