From 4d819357ba0679d0f1650c0c2c8cd4d3d9e97dac Mon Sep 17 00:00:00 2001
From: Lokathor <zefria@gmail.com>
Date: Wed, 19 Aug 2020 21:43:44 -0600
Subject: [PATCH] opt-in zeroable for maybe_unint

---
 Cargo.toml      | 1 +
 src/zeroable.rs | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 79ac2a8..e768b61 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,7 @@ exclude = ["/pedantic.bat"]
 # Note: Yeah these names are non-standard, we'll fix it in v2 some day maybe
 extern_crate_alloc = []
 extern_crate_std = ["extern_crate_alloc"]
+zeroable_maybe_uninit = []
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/src/zeroable.rs b/src/zeroable.rs
index fb96204..ebd412f 100644
--- a/src/zeroable.rs
+++ b/src/zeroable.rs
@@ -61,8 +61,8 @@ unsafe impl<T> Zeroable for Option<NonNull<T>> {}
 unsafe impl<T: Zeroable> Zeroable for PhantomData<T> {}
 unsafe impl<T: Zeroable> Zeroable for ManuallyDrop<T> {}
 
-// 2.0: add MaybeUninit
-//unsafe impl<T> Zeroable for MaybeUninit<T> {}
+#[cfg(feature = "zeroable_maybe_uninit")]
+unsafe impl<T> Zeroable for core::mem::MaybeUninit<T> {}
 
 unsafe impl<A: Zeroable> Zeroable for (A,) {}
 unsafe impl<A: Zeroable, B: Zeroable> Zeroable for (A, B) {}