From 4d2c26871061541989aef7908767b9a0bbd34001 Mon Sep 17 00:00:00 2001
From: "andrey.bychkov" <andrey@signalmodelling.ru>
Date: Mon, 10 Aug 2026 16:26:13 +0300
Subject: [PATCH] fix(piluaprogram): add destructor to close Lua state

luaL_newstate() allocates a Lua state (~2-4 MB with libraries)
in the constructor, but there was no destructor to call lua_close().
Every PILuaProgram instance leaked its entire Lua state.
Add ~PILuaProgram() that calls lua_close(PRIVATE->lua_state).
---
 libs/lua/piluaprogram.cpp    | 5 +++++
 libs/main/lua/piluaprogram.h | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/libs/lua/piluaprogram.cpp b/libs/lua/piluaprogram.cpp
index 2a09518b..3c4bca65 100644
--- a/libs/lua/piluaprogram.cpp
+++ b/libs/lua/piluaprogram.cpp
@@ -30,6 +30,11 @@ PILuaProgram::PILuaProgram() {
 }
 
 
+PILuaProgram::~PILuaProgram() {
+	lua_close(PRIVATE->lua_state);
+}
+
+
 bool PILuaProgram::load(const PIString & script) {
 	int ret = luaL_dostring(PRIVATE->lua_state, script.dataUTF8());
 	if (ret != 0) return false;
diff --git a/libs/main/lua/piluaprogram.h b/libs/main/lua/piluaprogram.h
index 73a863ed..2e7b95cf 100644
--- a/libs/main/lua/piluaprogram.h
+++ b/libs/main/lua/piluaprogram.h
@@ -41,6 +41,10 @@ public:
 	//! \~russian Создает объект Lua-программы и открывает стандартные библиотеки Lua.
 	PILuaProgram();
 
+	//! \~english Closes the Lua state and releases all associated resources.
+	//! \~russian Закрывает Lua state и освобождает все связанные ресурсы.
+	~PILuaProgram();
+
 	//! \~english Loads and executes Lua source code from \a script.
 	//! \~russian Загружает и выполняет исходный код Lua из \a script.
 	bool load(const PIString & script);