From 2c56ccfabeca83d0a88682f71787a87fa68cdbaf Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Mon, 19 Apr 2021 14:22:39 +0200
Subject: Fixed a small issue with Custom Mem handler and MexFreeBlock
 calculation

---
 src/custommem.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/custommem.c b/src/custommem.c
index 7f176fa3..80adb476 100644
--- a/src/custommem.c
+++ b/src/custommem.c
@@ -96,7 +96,9 @@ static size_t getMaxFreeBlock(void* block, size_t block_size)
     int maxsize = 0;
     while(m->prev.x32) {    // while there is a subblock
         if(!m->prev.fill && m->prev.size>maxsize) {
-            maxsize = m->prev.size-sizeof(blockmark_t);
+            maxsize = m->prev.size;
+            if(maxsize>sizeof(blockmark_t))
+                maxsize -= sizeof(blockmark_t);
             if((uintptr_t)block+maxsize>(uintptr_t)m)
                 return maxsize; // no block large enough left...
         }
-- 
cgit 1.4.1