1 files changed, 11 insertions, 0 deletions
diff --git a/ares/setup_once.h b/ares/setup_once.h
index 083fdbc4f..c80fc32d9 100644
--- a/ares/setup_once.h
+++ b/ares/setup_once.h
@@ -213,6 +213,17 @@ typedef int sig_atomic_t;
 
 
 /*
+ * Convenience SIG_ATOMIC_T definition
+ */
+
+#ifdef HAVE_SIG_ATOMIC_T_VOLATILE
+#define SIG_ATOMIC_T static sig_atomic_t
+#else
+#define SIG_ATOMIC_T static volatile sig_atomic_t
+#endif
+
+
+/*
  * Default return type for signal handlers.
  */