From 1feef2e276cefaab9dfbf83b19b01a54afea1709 Mon Sep 17 00:00:00 2001
From: "Evgeniy A. Dushistov" <dushistov@mail.ru>
Date: Mon, 12 Oct 2026 17:07:23 +0300
Subject: [PATCH] fix: writing outside of sharedBuffer if size small enough

valgrind catch in rather old couchbase-lite-core write of 8 bytes
to place, for each was allocated only 4.

So that's why this fix.
Plus I suppose it is C++ standard violation to allocate less them sizeof(type):

```
The lifetime of an object of type T begins when:

    (2.1)
    storage with the proper alignment and size for type T is obtained
```
---
 Fleece/API_Impl/FLSlice.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Fleece/API_Impl/FLSlice.cc b/Fleece/API_Impl/FLSlice.cc
index 6b45b8b3..766d26cb 100644
--- a/Fleece/API_Impl/FLSlice.cc
+++ b/Fleece/API_Impl/FLSlice.cc
@@ -117,7 +117,7 @@ namespace fleece {
         uint8_t _buf[4];
 
         static inline void* operator new(size_t basicSize, size_t bufferSize) noexcept {
-            return malloc(basicSize - sizeof(sharedBuffer::_buf) + bufferSize);
+            return malloc(basicSize - sizeof(sharedBuffer::_buf) + std::max(bufferSize, sizeof(sharedBuffer::_buf)));
         }
 
         static inline void operator delete(void *self) {