From ccf9bd3ebbc0306d92fb885661a85c70fb13fa60 Mon Sep 17 00:00:00 2001
From: Patrick Pelissier <Patrick.Pelissier@gmail.com>
Date: Sun, 6 Aug 2017 11:50:11 +0200
Subject: [PATCH] Add more assertions

---
 m-deque.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/m-deque.h b/m-deque.h
index b9c172d1..96db3c42 100644
--- a/m-deque.h
+++ b/m-deque.h
@@ -177,6 +177,7 @@
   M_C(name, _pop_back)(type *ptr, deque_t d)				\
   {									\
     DEQUEI_CONTRACT(d);							\
+    assert(d->count > 0);						\
     deque_node_t *n = d->back->node;					\
     size_t index = d->back->index;					\
     index --;								\
@@ -202,6 +203,7 @@
   M_C(name, _pop_front)(type *ptr, deque_t d)				\
   {									\
     DEQUEI_CONTRACT(d);							\
+    assert(d->count > 0);						\
     deque_node_t *n = d->front->node;					\
     size_t index = d->front->index;					\
     if (M_UNLIKELY (n->size <= index)) {				\