From 5f59e87f26eae9bb716f161fe40fe1fc0771e30c Mon Sep 17 00:00:00 2001
From: Taiki Endo <te316e89@gmail.com>
Date: Sun, 14 Jul 2019 22:16:09 +0900
Subject: [PATCH] Support trailing commas in pin_mut! macro

---
 src/stack_pin.rs   | 2 +-
 tests/stack_pin.rs | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/stack_pin.rs b/src/stack_pin.rs
index 997a5b9..f8ac524 100644
--- a/src/stack_pin.rs
+++ b/src/stack_pin.rs
@@ -10,7 +10,7 @@
 /// ```
 #[macro_export]
 macro_rules! pin_mut {
-    ($($x:ident),*) => { $(
+    ($($x:ident),* $(,)?) => { $(
         // Move the value to ensure that it is owned
         let mut $x = $x;
         // Shadow the original binding so that it can't be directly accessed
diff --git a/tests/stack_pin.rs b/tests/stack_pin.rs
index 0708a7d..ce83491 100644
--- a/tests/stack_pin.rs
+++ b/tests/stack_pin.rs
@@ -7,4 +7,13 @@ fn stack_pin() {
     let foo = Foo {};
     pin_mut!(foo);
     let _: Pin<&mut Foo> = foo;
+
+    let bar = Foo {};
+    let baz = Foo {};
+    pin_mut!(
+        bar,
+        baz,
+    );
+    let _: Pin<&mut Foo> = bar;
+    let _: Pin<&mut Foo> = baz;
 }