From 377594dcedf812dab65adfe2f892a5438b780731 Mon Sep 17 00:00:00 2001
From: Yuri Astrakhan <YuriAstrakhan@gmail.com>
Date: Wed, 14 Feb 2024 18:56:21 -0500
Subject: [PATCH] add safety text

---
 library/core/src/fmt/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs
index 3c9cd093ad86..a1513515c09b 100644
--- a/library/core/src/fmt/mod.rs
+++ b/library/core/src/fmt/mod.rs
@@ -444,6 +444,7 @@ impl<'a> Arguments<'a> {
     #[inline]
     const fn as_const_str(&self) -> Option<&'static str> {
         let s = self.as_str();
+        // SAFETY: both cases are valid as the result
         if unsafe { core::intrinsics::is_val_statically_known(s.is_some()) } { s } else { None }
     }
 }