From 9f58c5fa7cf434dc6b19a961c4ec5a453e6dedcd Mon Sep 17 00:00:00 2001
From: Ingvar Stepanyan <me@rreverser.com>
Date: Thu, 21 Feb 2019 23:02:34 +0000
Subject: [PATCH] Optimise vec![false; N] to zero-alloc

Nowadays booleans have a well-defined representation, so there is no reason not to optimise their allocation.
---
 src/liballoc/vec.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/liballoc/vec.rs b/src/liballoc/vec.rs
index a351d482fedde..44042562a8122 100644
--- a/src/liballoc/vec.rs
+++ b/src/liballoc/vec.rs
@@ -1606,6 +1606,7 @@ impl_is_zero!(u64, |x| x == 0);
 impl_is_zero!(u128, |x| x == 0);
 impl_is_zero!(usize, |x| x == 0);
 
+impl_is_zero!(bool, |x| x == false);
 impl_is_zero!(char, |x| x == '\0');
 
 impl_is_zero!(f32, |x: f32| x.to_bits() == 0);