From 5d10c660f1912e4679fa3cdb84e6acea96e4953f Mon Sep 17 00:00:00 2001
From: dignifiedquire <me@dignifiedquire.com>
Date: Mon, 4 Mar 2024 19:29:54 +0100
Subject: [PATCH] add extern std

---
 sha1-checked/src/lib.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sha1-checked/src/lib.rs b/sha1-checked/src/lib.rs
index c5475bca..25baf66e 100644
--- a/sha1-checked/src/lib.rs
+++ b/sha1-checked/src/lib.rs
@@ -23,6 +23,9 @@ pub use digest::{self, Digest};
 
 use core::slice::from_ref;
 
+#[cfg(feature = "std")]
+extern crate std;
+
 #[cfg(feature = "zeroize")]
 use digest::zeroize::{Zeroize, ZeroizeOnDrop};
 use digest::{