1 files changed, 8 insertions, 0 deletions
diff --git a/libpager/queue.h b/libpager/queue.h
index d3cf738e..abcd3b98 100644
--- a/libpager/queue.h
+++ b/libpager/queue.h
@@ -19,6 +19,8 @@
    You should have received a copy of the GNU General Public License
    along with the GNU Hurd.  If not, see <http://www.gnu.org/licenses/>.  */
 
+#include <stdbool.h>
+
 /* A FIFO queue with constant-time enqueue and dequeue operations.  */
 struct item {
   struct item *next;
@@ -59,3 +61,9 @@ queue_dequeue (struct queue *q)
   r->next = NULL;
   return r;
 }
+
+static inline bool
+queue_empty (struct queue *q)
+{
+  return q->head == NULL;
+}