From c6e3ea475b9378fd551064e7b4e74ee96855337f Mon Sep 17 00:00:00 2001
From: varkor <github@varkor.com>
Date: Mon, 25 Mar 2019 23:37:00 +0000
Subject: [PATCH] Visit path in `walk_mac`

---
 src/libsyntax/visit.rs                | 4 ++--
 src/libsyntax_ext/proc_macro_decls.rs | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/libsyntax/visit.rs b/src/libsyntax/visit.rs
index 6b3a30ccb54..fbd6641f7c2 100644
--- a/src/libsyntax/visit.rs
+++ b/src/libsyntax/visit.rs
@@ -647,8 +647,8 @@ pub fn walk_stmt<'a, V: Visitor<'a>>(visitor: &mut V, statement: &'a Stmt) {
     }
 }
 
-pub fn walk_mac<'a, V: Visitor<'a>>(_: &mut V, _: &Mac) {
-    // Empty!
+pub fn walk_mac<'a, V: Visitor<'a>>(visitor: &mut V, mac: &'a Mac) {
+    visitor.visit_path(&mac.node.path, DUMMY_NODE_ID);
 }
 
 pub fn walk_anon_const<'a, V: Visitor<'a>>(visitor: &mut V, constant: &'a AnonConst) {
diff --git a/src/libsyntax_ext/proc_macro_decls.rs b/src/libsyntax_ext/proc_macro_decls.rs
index d5f37aff222..22fee902aea 100644
--- a/src/libsyntax_ext/proc_macro_decls.rs
+++ b/src/libsyntax_ext/proc_macro_decls.rs
@@ -317,7 +317,7 @@ impl<'a> Visitor<'a> for CollectProcMacros<'a> {
         self.in_root = prev_in_root;
     }
 
-    fn visit_mac(&mut self, mac: &ast::Mac) {
+    fn visit_mac(&mut self, mac: &'a ast::Mac) {
         visit::walk_mac(self, mac)
     }
 }