From b1212baa6fd2ff00c64a779f6ee2570cf60547b0 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sat, 16 Dec 2017 11:53:24 +0100
Subject: Add assertions

---
 zix/btree.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/zix/btree.c b/zix/btree.c
index 89a3e87..78a5a0d 100644
--- a/zix/btree.c
+++ b/zix/btree.c
@@ -641,6 +641,7 @@ zix_btree_lower_bound(const ZixBTree* const t,
 	}
 
 	const ZixBTreeIterFrame* const frame = &(*ti)->stack[(*ti)->level];
+	assert(frame->node);
 	if (frame->index == frame->node->n_vals) {
 		if (found) {
 			// Found on a previous level but went too far
@@ -658,6 +659,7 @@ ZIX_API void*
 zix_btree_get(const ZixBTreeIter* const ti)
 {
 	const ZixBTreeIterFrame* const frame = &ti->stack[ti->level];
+	assert(frame->node);
 	assert(frame->index < frame->node->n_vals);
 	return frame->node->vals[frame->index];
 }
-- 
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