From 987020846ce40ce479df3d62adc47ca4609a5317 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sun, 10 Jun 2018 14:26:26 -0700
Subject: Enable fall through past $:lifetime matcher

---
 src/libsyntax/ext/tt/macro_parser.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/libsyntax')

diff --git a/src/libsyntax/ext/tt/macro_parser.rs b/src/libsyntax/ext/tt/macro_parser.rs
index b53d94db27e..fe458fa9977 100644
--- a/src/libsyntax/ext/tt/macro_parser.rs
+++ b/src/libsyntax/ext/tt/macro_parser.rs
@@ -827,6 +827,14 @@ fn may_begin_with(name: &str, token: &Token) -> bool {
             Token::Interpolated(ref nt) => may_be_ident(&nt.0),
             _ => false,
         },
+        "lifetime" => match *token {
+            Token::Lifetime(_) => true,
+            Token::Interpolated(ref nt) => match nt.0 {
+                token::NtLifetime(_) | token::NtTT(_) => true,
+                _ => false,
+            },
+            _ => false,
+        },
         _ => match *token {
             token::CloseDelim(_) => false,
             _ => true,
-- 
cgit 1.4.1-3-g733a5