From 2a7a03053e570e253beeeef601e836ecca0d1cf3 Mon Sep 17 00:00:00 2001
From: Caio Oliveira <caiooliveirafarias0@gmail.com>
Date: Sat, 7 Feb 2026 01:47:25 -0300
Subject: [PATCH] DONOTMERGE

---
 ...-memset-when-clearing-an-empty-table.patch | 26 +++++++++++++++++++
 CMakeLists.txt                                |  1 +
 externals/cpmfile.json                        |  3 ++-
 3 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 .patch/unordered-dense/0002-avoid-memset-when-clearing-an-empty-table.patch

diff --git a/.patch/unordered-dense/0002-avoid-memset-when-clearing-an-empty-table.patch b/.patch/unordered-dense/0002-avoid-memset-when-clearing-an-empty-table.patch
new file mode 100644
index 0000000000..f7d7c7ebe2
--- /dev/null
+++ b/.patch/unordered-dense/0002-avoid-memset-when-clearing-an-empty-table.patch
@@ -0,0 +1,26 @@
+From b3622608433c183ba868a1dc8dd9cf285eb3b916 Mon Sep 17 00:00:00 2001
+From: Dario Petrillo <dario.pk1@gmail.com>
+Date: Thu, 27 Nov 2025 23:12:38 +0100
+Subject: [PATCH] avoid extra memset when clearing an empty table
+
+---
+ include/ankerl/unordered_dense.h | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/include/ankerl/unordered_dense.h b/include/ankerl/unordered_dense.h
+index 0835342..4938212 100644
+--- a/include/ankerl/unordered_dense.h
++++ b/include/ankerl/unordered_dense.h
+@@ -1490,8 +1490,10 @@ class table : public std::conditional_t<is_map_v<T>, base_table_type_map<T>, bas
+     // modifiers //////////////////////////////////////////////////////////////
+ 
+     void clear() {
+-        m_values.clear();
+-        clear_buckets();
++        if (!empty()) {
++            m_values.clear();
++            clear_buckets();
++        }
+     }
+ 
+     auto insert(value_type const& value) -> std::pair<iterator, bool> {
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0568a49ec8..118814c6c6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -577,6 +577,7 @@ add_subdirectory(externals)
 find_package(enet)
 find_package(MbedTLS)
 find_package(unordered_dense REQUIRED)
+set(ordered_dense_FORCE_BUNDLED true)
 
 if (ARCHITECTURE_x86 OR ARCHITECTURE_x86_64)
     find_package(xbyak)
diff --git a/externals/cpmfile.json b/externals/cpmfile.json
index b4960b5e6a..41406b6320 100644
--- a/externals/cpmfile.json
+++ b/externals/cpmfile.json
@@ -96,7 +96,8 @@
         "find_args": "CONFIG",
         "git_version": "4.8.1",
         "patches": [
-            "0001-fix-macos.patch"
+            "0001-fix-macos.patch",
+            "0002-avoid-memset-when-clearing-an-empty-table.patch"
         ]
     },
     "mbedtls": {