From 8bea2bac950f6716fbf26bcd2c718e048f77c9b7 Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Thu, 31 Jul 2025 15:32:44 -0700
Subject: Handle uninitialized pool. Pending test.

---
 mempool/src/mempool.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mempool/src/mempool.c b/mempool/src/mempool.c
index c398c4f..bae4fc9 100644
--- a/mempool/src/mempool.c
+++ b/mempool/src/mempool.c
@@ -9,6 +9,7 @@
 /// All of the blocks in the pool are assumed free.
 static void init_free_list(mempool* pool) {
   assert(pool);
+  assert(pool->num_blocks > 0);
   for (size_t i = 0; i < pool->num_blocks - 1; ++i) {
     pool->block_info[i].next_free = i + 1;
   }
@@ -64,6 +65,7 @@ void mempool_del_(mempool* pool) {
   }
 }
 
+// TODO: Add a unit test for clearing a pool that has not been initialized.
 void mempool_clear_(mempool* pool) {
   assert(pool);
   pool->head            = 0;
@@ -71,7 +73,9 @@ void mempool_clear_(mempool* pool) {
   pool->num_used_blocks = 0;
   memset(pool->blocks, 0, pool->num_blocks * pool->block_size_bytes);
   memset(pool->block_info, 0, pool->num_blocks * sizeof(BlockInfo));
-  init_free_list(pool);
+  if (pool->num_blocks > 0) {
+    init_free_list(pool);
+  }
 }
 
 void* mempool_alloc_(mempool* pool) {
-- 
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