From bb1959f4167f174404dc04808e07138dfd1a735b Mon Sep 17 00:00:00 2001
From: Mark Simulacrum <mark.simulacrum@gmail.com>
Date: Fri, 23 Dec 2016 20:47:47 -0700
Subject: [PATCH] Fix TypedArena infinitely looping when inplace reallocation
 fails.

---
 src/libarena/lib.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libarena/lib.rs b/src/libarena/lib.rs
index 02e548c4f6e2..cde8a85d97c5 100644
--- a/src/libarena/lib.rs
+++ b/src/libarena/lib.rs
@@ -196,9 +196,9 @@ fn grow(&self, n: usize) {
                     self.end.set(last_chunk.end());
                     return;
                 } else {
-                    let prev_capacity = last_chunk.storage.cap();
+                    new_capacity = last_chunk.storage.cap();
                     loop {
-                        new_capacity = prev_capacity.checked_mul(2).unwrap();
+                        new_capacity = new_capacity.checked_mul(2).unwrap();
                         if new_capacity >= currently_used_cap + n {
                             break;
                         }