From a5158bf577f692324c1d1ce5c9dbaa1521715861 Mon Sep 17 00:00:00 2001
From: Pedro Fedricci <pedromfedricci@gmail.com>
Date: Tue, 7 Jan 2025 17:17:50 -0300
Subject: [PATCH] chore: set no_std with conditional extern std

---
 src/lib.rs  | 14 ++++----------
 src/test.rs |  2 ++
 2 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 1f93ed0..808ec48 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -241,16 +241,7 @@
 //! [`RawMutex`]: https://docs.rs/lock_api/latest/lock_api/trait.RawMutex.html
 //! [`RawMutexFair`]: https://docs.rs/lock_api/latest/lock_api/trait.RawMutexFair.html
 
-#![cfg_attr(
-    all(
-        not(feature = "yield"),
-        not(feature = "thread_local"),
-        not(feature = "parking"),
-        not(loom),
-        not(test)
-    ),
-    no_std
-)]
+#![no_std]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![allow(clippy::module_name_repetitions)]
 #![allow(clippy::inline_always)]
@@ -258,6 +249,9 @@
 #![warn(rust_2024_compatibility)]
 #![warn(missing_docs)]
 
+#[cfg(any(feature = "yield", feature = "thread_local", feature = "parking", loom, test))]
+extern crate std;
+
 #[cfg(feature = "thread_local")]
 #[macro_use]
 pub(crate) mod thread_local;
diff --git a/src/test.rs b/src/test.rs
index b0bd1dc..fdf569e 100644
--- a/src/test.rs
+++ b/src/test.rs
@@ -227,6 +227,8 @@ pub mod tests {
 
     use core::ops::RangeInclusive;
     use std::fmt::Debug;
+    use std::format;
+    use std::string::ToString;
     use std::sync::atomic::{AtomicUsize, Ordering};
     use std::sync::mpsc::channel;
     use std::sync::Arc;