From 6b63e9b990b1624df3f93aeca849a33efcf156e9 Mon Sep 17 00:00:00 2001
From: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Date: Sat, 31 Oct 2020 22:47:57 +0300
Subject: Do not remove tokens before AST json serialization

---
 compiler/rustc_ast/src/tokenstream.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'compiler/rustc_ast/src/tokenstream.rs')

diff --git a/compiler/rustc_ast/src/tokenstream.rs b/compiler/rustc_ast/src/tokenstream.rs
index b53acb97aeb..98da20af8f6 100644
--- a/compiler/rustc_ast/src/tokenstream.rs
+++ b/compiler/rustc_ast/src/tokenstream.rs
@@ -153,8 +153,9 @@ impl fmt::Debug for LazyTokenStream {
 }
 
 impl<S: Encoder> Encodable<S> for LazyTokenStream {
-    fn encode(&self, _s: &mut S) -> Result<(), S::Error> {
-        panic!("Attempted to encode LazyTokenStream");
+    fn encode(&self, s: &mut S) -> Result<(), S::Error> {
+        // Used by AST json printing.
+        Encodable::encode(&self.create_token_stream(), s)
     }
 }
 
-- 
cgit 1.4.1-3-g733a5