我正在检查代码中的内存泄漏问题。一切正常,直到我遇到了这段代码:
mSystem = new LightSystem();
sf::View *view = th::DisplayManager::Get()->GetCamera();
mSystem->SetView(*view);
SetView
的作用非常小(仅提取传递的 view
指针的一些成员)。 当最新的代码行被注释时,一切都正常,但是取消注释后,在默认模式下工作失败,并在使用 Valgrind 进行内存泄漏检测时出现错误(valgrind --tool=memcheck ./Binary
)。
==23703== Use of uninitialised value of size 8
==23703== at 0x6B8472: ltbl::LightSystem::SetView(sf::View const&) (LightSystem.cpp:55)
==23703== by 0x6A7A7D: th::LightManager::Initialize() (LightManager.cpp:46)
==23703== by 0x6A75EA: th::Root::Initialize() (Root.cpp:101)
==23703== by 0x6A7113: th::Root::Root() (Root.cpp:66)
==23703== by 0x6A7553: th::Root::Get() (Root.cpp:88)
==23703== by 0x6291A8: th::Game::Initialize() (Game.cpp:36)
==23703== by 0x61DC1C: main (main.cpp:82)
==23703==
==23703== Invalid read of size 8
==23703== at 0x6B8472: ltbl::LightSystem::SetView(sf::View const&) (LightSystem.cpp:55)
==23703== by 0x6A7A7D: th::LightManager::Initialize() (LightManager.cpp:46)
==23703== by 0x6A75EA: th::Root::Initialize() (Root.cpp:101)
==23703== by 0x6A7113: th::Root::Root() (Root.cpp:66)
==23703== by 0x6A7553: th::Root::Get() (Root.cpp:88)
==23703== by 0x6291A8: th::Game::Initialize() (Game.cpp:36)
==23703== by 0x61DC1C: main (main.cpp:82)
==23703== Address 0x8 is not stack'd, malloc'd or (recently) free'd
==23703==
==23703==
==23703== Process terminating with default action of signal 11 (SIGSEGV)
==23703== Access not within mapped region at address 0x8
==23703== at 0x6B8472: ltbl::LightSystem::SetView(sf::View const&) (LightSystem.cpp:55)
==23703== by 0x6A7A7D: th::LightManager::Initialize() (LightManager.cpp:46)
==23703== by 0x6A75EA: th::Root::Initialize() (Root.cpp:101)
==23703== by 0x6A7113: th::Root::Root() (Root.cpp:66)
==23703== by 0x6A7553: th::Root::Get() (Root.cpp:88)
==23703== by 0x6291A8: th::Game::Initialize() (Game.cpp:36)
==23703== by 0x61DC1C: main (main.cpp:82)
==23703== If you believe this happened as a result of a stack
==23703== overflow in your program's main thread (unlikely but
==23703== possible), you can try to increase the size of the
==23703== main thread stack using the --main-stacksize= flag.
==23703== The main thread stack size used in this run was 8388608.
问题是:为什么没有使用valgrind时可以成功执行,但使用后就出现错误。我已经尝试将
--main-stacksize=
设为较大的值,但这并没有帮助我解决问题。