From bc1216e0464c5bf44158b8cb5319ff70446b5a13 Mon Sep 17 00:00:00 2001
From: Maybe Waffle <waffle.lapkin@gmail.com>
Date: Mon, 3 Oct 2022 00:41:54 +0000
Subject: [PATCH] Document when `slice::from_ptr_range[_mut]` panic

---
 library/core/src/slice/raw.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/library/core/src/slice/raw.rs b/library/core/src/slice/raw.rs
index f1e8bc79bf4a..50340a92d0d8 100644
--- a/library/core/src/slice/raw.rs
+++ b/library/core/src/slice/raw.rs
@@ -188,6 +188,10 @@ pub const fn from_mut<T>(s: &mut T) -> &mut [T] {
 ///
 /// Note that a range created from [`slice::as_ptr_range`] fulfills these requirements.
 ///
+/// # Panics
+///
+/// This function panics if `T` is a Zero-Sized Type (“ZST”).
+///
 /// # Caveat
 ///
 /// The lifetime for the returned slice is inferred from its usage. To
@@ -247,6 +251,10 @@ pub const unsafe fn from_ptr_range<'a, T>(range: Range<*const T>) -> &'a [T] {
 ///
 /// Note that a range created from [`slice::as_mut_ptr_range`] fulfills these requirements.
 ///
+/// # Panics
+///
+/// This function panics if `T` is a Zero-Sized Type (“ZST”).
+///
 /// # Examples
 ///
 /// ```