From adee3a067d8c5460d41739eccc4d32e328fa1a10 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <jorge.aparicio@ferrous-systems.com>
Date: Fri, 10 Sep 2021 13:16:43 +0200
Subject: [PATCH] fix build for ARMv6-M

---
 src/pool/singleton/arc.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/pool/singleton/arc.rs b/src/pool/singleton/arc.rs
index ca1559f5..90a915f2 100644
--- a/src/pool/singleton/arc.rs
+++ b/src/pool/singleton/arc.rs
@@ -54,9 +54,15 @@ use core::{
     marker::PhantomData,
     ops::Deref,
     ptr,
-    sync::atomic::{self, AtomicUsize, Ordering},
+    sync::atomic,
 };
 
+#[cfg(armv6m)]
+use atomic_polyfill::{AtomicUsize, Ordering};
+
+#[cfg(not(armv6m))]
+use core::sync::atomic::{AtomicUsize, Ordering};
+
 use crate::pool::{self, stack::Ptr, Node};
 
 /// Instantiates a pool of Arc pointers as a global singleton