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MainWindow: Fix use-after-free during shutdown

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Remove ConfigChangedCallback in MainWindow's destructor to prevent the
callback from accessing the destroyed MainWindow afterward.

After MainWindow is destroyed UICommon::Shutdown calls
LogManager::Shutdown which ultimately triggers any remaining callbacks.
This resulted in calling MainWindow::OnHardcoreChanged, which crashed in
debug builds and didn't have any obvious effect in release builds.
This commit is contained in:
Dentomologist 2025-04-24 11:36:18 -07:00
parent 805307f432
commit e37a195192
2 changed files with 8 additions and 1 deletions
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4
Source/Core/DolphinQt/MainWindow.cpp
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@ -34,6 +34,7 @@
#include <qpa/qplatformnativeinterface.h>
#endif
#include "Common/Config/Config.h"
#include "Common/ScopeGuard.h"
#include "Common/Version.h"
#include "Common/WindowSystemInfo.h"
@ -277,7 +278,7 @@ MainWindow::MainWindow(Core::System& system, std::unique_ptr<BootParameters> boo
if (AchievementManager::GetInstance().IsHardcoreModeActive())
Settings::Instance().SetDebugModeEnabled(false);
// This needs to trigger on both RA_HARDCORE_ENABLED and RA_ENABLED
Config::AddConfigChangedCallback(
m_config_changed_callback_id = Config::AddConfigChangedCallback(
[this]() { QueueOnObject(this, [this] { this->OnHardcoreChanged(); }); });
// If hardcore is enabled when the emulator starts, make sure it turns off what it needs to
if (Config::Get(Config::RA_HARDCORE_ENABLED))
@ -351,6 +352,7 @@ MainWindow::~MainWindow()
Settings::Instance().ResetNetPlayServer();
#ifdef USE_RETRO_ACHIEVEMENTS
Config::RemoveConfigChangedCallback(m_config_changed_callback_id);
AchievementManager::GetInstance().Shutdown();
#endif // USE_RETRO_ACHIEVEMENTS