From b7fa37d03e39dbf4120c136c84f388d357a74779 Mon Sep 17 00:00:00 2001
From: Scott Olson <scott@solson.me>
Date: Wed, 6 Jan 2016 14:17:38 -0600
Subject: [PATCH] Fix pretty-printing for empty tuples in MIR.

---
 src/librustc/mir/repr.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/librustc/mir/repr.rs b/src/librustc/mir/repr.rs
index b97d5939cf3..d90831c5dd1 100644
--- a/src/librustc/mir/repr.rs
+++ b/src/librustc/mir/repr.rs
@@ -804,10 +804,10 @@ fn fmt_tuple(fmt: &mut Formatter, name: &str, lvs: &[Operand]) -> fmt::Result {
                     Vec => write!(fmt, "{:?}", lvs),
 
                     Tuple => {
-                        if lvs.len() == 1 {
-                            write!(fmt, "({:?},)", lvs[0])
-                        } else {
-                            fmt_tuple(fmt, "", lvs)
+                        match lvs.len() {
+                            0 => write!(fmt, "()"),
+                            1 => write!(fmt, "({:?},)", lvs[0]),
+                            _ => fmt_tuple(fmt, "", lvs),
                         }
                     }