From 8db906c752bb1f3b69499acc7a44576611c123c6 Mon Sep 17 00:00:00 2001
From: Simonas Kazlauskas <git@kazlauskas.me>
Date: Tue, 1 Sep 2015 20:26:51 +0300
Subject: [PATCH] Implement Debug for BinaryHeap

Fixes #28154
---
 src/libcollections/binary_heap.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/libcollections/binary_heap.rs b/src/libcollections/binary_heap.rs
index bedeab67420cc..b73e7ab0d040c 100644
--- a/src/libcollections/binary_heap.rs
+++ b/src/libcollections/binary_heap.rs
@@ -154,6 +154,7 @@
 use core::iter::{FromIterator};
 use core::mem::swap;
 use core::ptr;
+use core::fmt;
 
 use slice;
 use vec::{self, Vec};
@@ -178,6 +179,13 @@ impl<T: Ord> Default for BinaryHeap<T> {
     fn default() -> BinaryHeap<T> { BinaryHeap::new() }
 }
 
+#[stable(feature = "binaryheap_debug", since = "1.4.0")]
+impl<T: fmt::Debug + Ord> fmt::Debug for BinaryHeap<T> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_list().entries(self.iter()).finish()
+    }
+}
+
 impl<T: Ord> BinaryHeap<T> {
     /// Creates an empty `BinaryHeap` as a max-heap.
     ///