From cc7929b1bd2c50c5b07442195fc6b0a13fa61d35 Mon Sep 17 00:00:00 2001
From: Michael Howell <michael@notriddle.com>
Date: Wed, 15 Sep 2021 09:14:20 -0700
Subject: [PATCH] docs(std): add docs for cof_from_cstr impls

CC #51430
---
 library/std/src/ffi/c_str.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/library/std/src/ffi/c_str.rs b/library/std/src/ffi/c_str.rs
index de05c37785295..3b9175503080c 100644
--- a/library/std/src/ffi/c_str.rs
+++ b/library/std/src/ffi/c_str.rs
@@ -915,6 +915,7 @@ impl From<CString> for Box<CStr> {
 
 #[stable(feature = "cow_from_cstr", since = "1.28.0")]
 impl<'a> From<CString> for Cow<'a, CStr> {
+    /// Converts a [`CString`] into an owned [`Cow`] without copying or allocating.
     #[inline]
     fn from(s: CString) -> Cow<'a, CStr> {
         Cow::Owned(s)
@@ -923,6 +924,7 @@ impl<'a> From<CString> for Cow<'a, CStr> {
 
 #[stable(feature = "cow_from_cstr", since = "1.28.0")]
 impl<'a> From<&'a CStr> for Cow<'a, CStr> {
+    /// Converts a [`CStr`] into a borrowed [`Cow`] without copying or allocating.
     #[inline]
     fn from(s: &'a CStr) -> Cow<'a, CStr> {
         Cow::Borrowed(s)
@@ -931,6 +933,7 @@ impl<'a> From<&'a CStr> for Cow<'a, CStr> {
 
 #[stable(feature = "cow_from_cstr", since = "1.28.0")]
 impl<'a> From<&'a CString> for Cow<'a, CStr> {
+    /// Converts a `&`[`CString`] into a borrowed [`Cow`] without copying or allocating.
     #[inline]
     fn from(s: &'a CString) -> Cow<'a, CStr> {
         Cow::Borrowed(s.as_c_str())