From 99d6fcb985dc13a52e9a335a5693ae33433ce3ca Mon Sep 17 00:00:00 2001
From: Adam Sawicki <adam.sawicki@amd.com>
Date: Mon, 25 Jul 2022 11:18:01 +0200
Subject: [PATCH] Fixed incorrect counting of m_BlocksFreeSize when merging
 margin blocks.

Code by @medranSolus
---
 include/vk_mem_alloc.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index 4f1c238..cc8fa24 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h
@@ -10587,9 +10587,10 @@ void VmaBlockMetadata_TLSF::Free(VmaAllocHandle allocHandle)
     VkDeviceSize debugMargin = GetDebugMargin();
     if (debugMargin > 0)
     {
+        VMA_ASSERT(next->size == debugMargin);
         // Adjust stats for one less block
         --m_BlocksFreeCount;
-        m_BlocksFreeSize -= block->size;
+        m_BlocksFreeSize -= debugMargin;
         MergeBlock(next, block);
         block = next;
         next = next->nextPhysical;