behaviac动态库运行出错
(金庆的专栏 2017.3.16)
游戏是静态链接的运行库，添加behaviac动态库后，运行出错：
> ucrtbased.dll!free_dbg_nolock(void * const block, const int block_use) 行 996 C++
ucrtbased.dll!_free_dbg(void * block, int block_use) 行 1030 C++
libbehaviac_msvc_debug.dll!operator delete(void * block) 行 17 C++
libbehaviac_msvc_debug.dll!std::_Deallocate(void * _Ptr, unsigned int _Count, unsigned int _Sz) 行 132 C++
libbehaviac_msvc_debug.dll!std::allocator<std::_Container_proxy>::deallocate(std::_Container_proxy * _Ptr, unsigned int _Count) 行 720 C++
libbehaviac_msvc_debug.dll!std::_Wrap_alloc<std::allocator<std::_Container_proxy> >::deallocate(std::_Container_proxy * _Ptr, unsigned int _Count) 行 988 C++
libbehaviac_msvc_debug.dll!std::_String_alloc<std::_String_base_types<char,std::allocator<char> > >::_Free_proxy() 行 661 C++
libbehaviac_msvc_debug.dll!std::_String_alloc<std::_String_base_types<char,std::allocator<char> > >::~_String_alloc<std::_String_base_types<char,std::allocator<char> > >() 行 629 C++
libbehaviac_msvc_debug.dll!std::basic_string<char,std::char_traits<char>,std::allocator<char> >::~basic_string<char,std::char_traits<char>,std::allocator<char> >() 行 1018 C++
libbehaviac_msvc_debug.dll!behaviac::CTagObject::Save(behaviac::IIONode * node, const char * szClassName) 行 100 C++
libbehaviac_msvc_debug.dll!behaviac::Agent::InitVariableRegistry() 行 476 C++
libbehaviac_msvc_debug.dll!behaviac::Agent::Init_(int contextId, behaviac::Agent * pAgent, short priority, const char * agentInstanceName) 行 227 C++
giant_test_client.exe!behaviac::Agent::InitAgent(behaviac::Agent * pAgent, const char * agentInstanceName, const char * agentInstanceNameAny, bool bToBind, int contextId, short priority) 行 56 C++
giant_test_client.exe!behaviac::Agent::Create<PlaneAgent>(const char * agentInstanceName, int contextId, short priority) 行 88 C++
giant_test_client.exe!Client::InitPlayer() 行 36 C++
giant_test_client.exe!Client::Client() 行 23 C++
giant_test_client.exe!main() 行 50 C++
giant_test_client.exe!invoke_main() 行 64 C++
giant_test_client.exe!__scrt_common_main_seh() 行 253 C++
giant_test_client.exe!__scrt_common_main() 行 296 C++
giant_test_client.exe!mainCRTStartup() 行 17 C++
kernel32.dll!@BaseThreadInitThunk@12 () 未知
ntdll.dll!___RtlUserThreadStart@8 () 未知
ntdll.dll!__RtlUserThreadStart@8 () 未知
看来是string跨越动态库析构。
如果string在动态库中构造又析构，动态库的运行时库可以与主程序不同。
但如果用主程序的运行时申请内存，在动态库中用另一个运行时库释放，就会产生上面的错误。
可以建立一个最小化的程序来复现上面的错误。
新建一个行为树，为Agent创建一个属性。
然后主程序运行库设为：多线程调试 (/MTd)，而不是：多线程调试 DLL (/MDd)。
调试运行创建Agent时就会出上面错误。
疑问是这是动态库内部调用，怎么会产生跨库析构呢？
断点进入string的构造过程可以发现，string不是动态库构造的，而是主程序构造的：
> test_client.exe!behaviac::StringUtils::internal::ToString(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & val) 行 138 C++
test_client.exe!behaviac::StringUtils::Detail::ToStringPtrHanler<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,0>::ToString(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & v) 行 192 C++
test_client.exe!behaviac::StringUtils::Detail::ToStringEnumHanler<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,0>::ToString(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & v) 行 228 C++
test_client.exe!behaviac::StringUtils::Detail::ToStringStructHanler<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,0>::ToString(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & val) 行 242 C++
test_client.exe!behaviac::StringUtils::ToString<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & val) 行 256 C++
test_client.exe!behaviac::SetFromString_t<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,0>::Get(std::basic_string<char,std::char_traits<char>,std::allocator<char> > & value) 行 790 C++
test_client.exe!behaviac::CProperty<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >::GetValueToString(const behaviac::Agent * self) 行 848 C++
libbehaviac_msvc_debug.dll!behaviac::CTagObject::Save(behaviac::IIONode * node, const char * szClassName) 行 97 C++
libbehaviac_msvc_debug.dll!behaviac::Agent::InitVariableRegistry() 行 476 C++
libbehaviac_msvc_debug.dll!behaviac::Agent::Init_(int contextId, behaviac::Agent * pAgent, short priority, const char * agentInstanceName) 行 227 C++
test_client.exe!behaviac::Agent::InitAgent(behaviac::Agent * pAgent, const char * agentInstanceName, const char * agentInstanceNameAny, bool bToBind, int contextId, short priority) 行 56 C++
test_client.exe!behaviac::Agent::Create<PlaneAgent>(const char * agentInstanceName, int contextId, short priority) 行 88 C++
test_client.exe!Client::InitPlayer() 行 36 C++
test_client.exe!Client::Client() 行 23 C++
test_client.exe!main() 行 50 C++
test_client.exe!invoke_main() 行 64 C++
test_client.exe!__scrt_common_main_seh() 行 253 C++
test_client.exe!__scrt_common_main() 行 296 C++
test_client.exe!mainCRTStartup() 行 17 C++
kernel32.dll!75c3336a() 未知
[下面的框架可能不正确和/或缺失，没有为 kernel32.dll 加载符号]
ntdll.dll!76fa9902() 未知
ntdll.dll!76fa98d5() 未知
原因为 IProperty::GetValueToString()是虚函数，实际实现是由主程序实现模板类。
behaviac::CProperty<>::GetValueToString()
解决方案为使用behaviac静态库并且静态链接运行时库。