From d9087cb388c00ec9a53f7a3049afb2ce00ce56fa Mon Sep 17 00:00:00 2001
From: Daniel Henry-Mantilla <daniel.henry.mantilla@gmail.com>
Date: Wed, 30 Oct 2019 14:52:56 +0100
Subject: [PATCH] Added a panic-on-uninhabited guard on get_ref and get_mut

---
 src/libcore/mem/maybe_uninit.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libcore/mem/maybe_uninit.rs b/src/libcore/mem/maybe_uninit.rs
index 60d20735db4..d5893dd1d58 100644
--- a/src/libcore/mem/maybe_uninit.rs
+++ b/src/libcore/mem/maybe_uninit.rs
@@ -571,6 +571,7 @@ impl<T> MaybeUninit<T> {
     #[unstable(feature = "maybe_uninit_ref", issue = "63568")]
     #[inline(always)]
     pub unsafe fn get_ref(&self) -> &T {
+        intrinsics::panic_if_uninhabited::<T>();
         &*self.value
     }
 
@@ -690,6 +691,7 @@ impl<T> MaybeUninit<T> {
     #[unstable(feature = "maybe_uninit_ref", issue = "63568")]
     #[inline(always)]
     pub unsafe fn get_mut(&mut self) -> &mut T {
+        intrinsics::panic_if_uninhabited::<T>();
         &mut *self.value
     }