1 files changed, 2 insertions, 0 deletions
diff --git a/attr.c b/attr.c
index 999935f..994a2f2 100644
--- a/attr.c
+++ b/attr.c
@@ -102,7 +102,9 @@ pthread_attr_init(pthread_attr_t *attr)
 #endif
 
   attr->detachedstate = PTHREAD_CREATE_JOINABLE;
+#ifdef HAVE_SIGSET_T
   memset(&(attr->sigmask), 0, sizeof(sigset_t));
+#endif /* HAVE_SIGSET_T */
 
   /* Priority uses Win32 priority values. */
   attr->priority = THREAD_PRIORITY_NORMAL;