From e4f9db7b8f36edcc5bc3d9d0e18d7fb0f6b55bc1 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <jorge@japaric.io>
Date: Thu, 18 May 2017 23:33:08 -0500
Subject: [PATCH] core: fix unused_macro warning

when compiling the crate for a target with max-atomic-width = 0

fixes #42097
---
 src/libcore/sync/atomic.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libcore/sync/atomic.rs b/src/libcore/sync/atomic.rs
index c13fd5583543e..d647a94a1efde 100644
--- a/src/libcore/sync/atomic.rs
+++ b/src/libcore/sync/atomic.rs
@@ -918,6 +918,7 @@ impl<T> AtomicPtr<T> {
     }
 }
 
+#[cfg(target_has_atomic = "ptr")]
 macro_rules! atomic_int {
     ($stable:meta,
      $stable_cxchg:meta,