新建/删除不匹配

Question

在我的库（替换全局 new/delete 运算符）中，我使用另一个外部库 (casablanca pplx)。此外部库不包含替换的 new/delete 运算符（我使用 Visual studio 的显示包含选项进行了检查）。

此外部库的某些对象 （如流或异常） 是使用默认 new[] 运算符 创建的（调用我替换的 new 运算符），并使用默认的 delete[] 运算符 销毁（它不会调用我替换的 delete 运算符） .这会导致 一般保护错误 。

什么可以解释这种行为？

我用的是Visual Studio2012.

示例源代码（使用casablanca http客户端获取google.fr）：

web::http::client::http_client_config config;
config.set_timeout(std::chrono::seconds(10));
utility::string_t uri = L"http://www.google.fr";
web::http::client::http_client client(uri, config);
web::http::http_request request(web::http::methods::GET);

client.request(request).then([uri](web::http::http_response response ) {
    unsigned short statusCode = response.status_code();
    if (statusCode == 200)
    {
        concurrency::streams::stringstreambuf stream;
        return response.body().read_to_end(stream).then([stream](size_t) {
            std::string responseText = stream.collection();
        }); // crash here (stream destructor)
    }
});

新的调用堆栈：

Application64_d.dll!operator new(unsigned __int64 iSize) Line 262   C++ // My replaced new operator
Application64_d.dll!operator new[](unsigned __int64 count) Line 7   C++ // C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\crt\src\newaop.cpp
Application64_d.dll!Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block::_block(unsigned __int64 size) Line 437    C++
Application64_d.dll!std::_Ref_count_obj<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block>::_Ref_count_obj<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block><unsigned __int64 & __ptr64>(unsigned __int64 & _V0) Line 873    C++
Application64_d.dll!std::make_shared<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block,unsigned __int64 & __ptr64>(unsigned __int64 & _V0) Line 972  C++
Application64_d.dll!Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_alloc(unsigned __int64 count) Line 165   C++
Application64_d.dll!Concurrency::streams::details::streambuf_state_manager<unsigned char>::alloc(unsigned __int64 count) Line 651   C++
Application64_d.dll!Concurrency::streams::streambuf<unsigned char>::alloc(unsigned __int64 count) Line 993  C++
Application64_d.dll!web::http::client::details::winhttp_client::completion_callback(void * hRequestHandle, unsigned __int64 context, unsigned long statusCode, void * statusInfo, unsigned long statusInfoLength) Line 1167 C++
winhttp.dll!00007ff83259db67()  Unknown
winhttp.dll!00007ff83259d87a()  Unknown
winhttp.dll!00007ff832599fe5()  Unknown
Application64_d.dll!web::http::client::details::winhttp_client::read_next_response_chunk(web::http::client::details::winhttp_request_context * pContext, unsigned long bytesRead, bool firstRead) Line 693  C++
Application64_d.dll!web::http::client::details::winhttp_client::completion_callback(void * hRequestHandle, unsigned __int64 context, unsigned long statusCode, void * statusInfo, unsigned long statusInfoLength) Line 1156 C++
winhttp.dll!00007ff83259db67()  Unknown
winhttp.dll!00007ff8325c653d()  Unknown
Application64_d.dll!web::http::client::details::winhttp_client::completion_callback(void * hRequestHandle, unsigned __int64 context, unsigned long statusCode, void * statusInfo, unsigned long statusInfoLength) Line 1051 C++
winhttp.dll!00007ff83259db67()  Unknown
winhttp.dll!00007ff8325a20b7()  Unknown
winhttp.dll!00007ff8325958a0()  Unknown
winhttp.dll!00007ff832594699()  Unknown
ntdll.dll!00007ff839723021()    Unknown
ntdll.dll!00007ff839721989()    Unknown
kernel32.dll!00007ff8392c2774() Unknown
ntdll.dll!00007ff839750d51()    Unknown

删除调用堆栈：

msvcr110d.dll!operator delete(void * pUserData) Line 52 C++ // C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\crt\src\dbgdel.cpp
msvcr110d.dll!operator delete[](void * p) Line 22   C++ // C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\crt\src\delete2.cpp
Application64_d.dll!Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block::~_block() Line 443    C++
Application64_d.dll!Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block::`scalar deleting destructor'(unsigned int)    C++
Application64_d.dll!std::_Ref_count_obj<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block>::_Destroy() Line 885  C++
Application64_d.dll!std::_Ref_count_base::_Decref() Line 121    C++
Application64_d.dll!std::_Ptr_base<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block>::_Decref() Line 347    C++
Application64_d.dll!std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block>::~shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block>() Line 624 C++
Application64_d.dll!std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block>::`scalar deleting destructor'(unsigned int)   C++
Application64_d.dll!std::allocator<std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> >::destroy<std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> >(std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> * _Ptr) Line 624  C++
Application64_d.dll!std::allocator_traits<std::allocator<std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> > >::destroy<std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> >(std::allocator<std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> > & _Al, std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> * _Ptr) Line 758    C++
Application64_d.dll!std::_Wrap_alloc<std::allocator<std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> > >::destroy<std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> >(std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> * _Ptr) Line 910   C++
Application64_d.dll!std::deque<std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block>,std::allocator<std::shared_ptr<Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_block> > >::pop_front() Line 1476    C++
Application64_d.dll!Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::update_read_head(unsigned __int64 count) Line 644 C++
Application64_d.dll!Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::read(unsigned char * ptr, unsigned __int64 count, bool advance) Line 620  C++
Application64_d.dll!<lambda_1f1656160f66eb3ff369c30cc6352caf>::operator()() Line 279    C++
Application64_d.dll!std::_Callable_obj<<lambda_1f1656160f66eb3ff369c30cc6352caf>,0>::_ApplyX<void>() Line 431   C++
Application64_d.dll!std::_Func_impl<std::_Callable_obj<<lambda_1f1656160f66eb3ff369c30cc6352caf>,0>,std::allocator<std::_Func_class<void,std::_Nil,std::_Nil,std::_Nil,std::_Nil,std::_Nil,std::_Nil,std::_Nil> >,void,std::_Nil,std::_Nil,std::_Nil,std::_Nil,std::_Nil,std::_Nil,std::_Nil>::_Do_call() Line 239  C++
Application64_d.dll!std::_Func_class<void,std::_Nil,std::_Nil,std::_Nil,std::_Nil,std::_Nil,std::_Nil,std::_Nil>::operator()() Line 514 C++
Application64_d.dll!Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_request::complete() Line 543 C++
Application64_d.dll!Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::fulfill_outstanding() Line 424    C++
Application64_d.dll!Concurrency::streams::details::basic_producer_consumer_buffer<unsigned char>::_close_write() Line 360   C++
Application64_d.dll!Concurrency::streams::details::streambuf_state_manager<unsigned char>::close(int mode) Line 413 C++
Application64_d.dll!Concurrency::streams::streambuf<unsigned char>::close(int mode) Line 960    C++
Application64_d.dll!Concurrency::streams::basic_ostream<unsigned char>::close() Line 151    C++
Application64_d.dll!web::http::details::http_msg_base::_complete(unsigned __int64 body_size, const std::exception_ptr & exceptionPtr) Line 181  C++
Application64_d.dll!web::http::client::details::request_context::complete_request(unsigned __int64 body_size) Line 119  C++
Application64_d.dll!web::http::client::details::winhttp_client::completion_callback(void * hRequestHandle, unsigned __int64 context, unsigned long statusCode, void * statusInfo, unsigned long statusInfoLength) Line 1194 C++
winhttp.dll!00007ff83259db67()  Unknown
winhttp.dll!00007ff83259d87a()  Unknown
winhttp.dll!00007ff832599fe5()  Unknown
Application64_d.dll!web::http::client::details::winhttp_client::read_next_response_chunk(web::http::client::details::winhttp_request_context * pContext, unsigned long bytesRead, bool firstRead) Line 693  C++
Application64_d.dll!web::http::client::details::winhttp_client::completion_callback(void * hRequestHandle, unsigned __int64 context, unsigned long statusCode, void * statusInfo, unsigned long statusInfoLength) Line 1231 C++
winhttp.dll!00007ff83259b6aa()  Unknown
Application64_d.dll!web::http::client::details::winhttp_client::completion_callback(void * hRequestHandle, unsigned __int64 context, unsigned long statusCode, void * statusInfo, unsigned long statusInfoLength) Line 1174 C++
winhttp.dll!00007ff83259db67()  Unknown
winhttp.dll!00007ff8325955e7()  Unknown
winhttp.dll!00007ff832594699()  Unknown
ntdll.dll!00007ff839723021()    Unknown
ntdll.dll!00007ff839721989()    Unknown
kernel32.dll!00007ff8392c2774() Unknown
ntdll.dll!00007ff839750d51()    Unknown

新建和删除运算符：

inline void* operator new (::size_t size);
inline void operator delete (void* ptr);
inline void* operator new[] (::size_t size);
inline void operator delete[] (void* ptr);

Answer 1

在 Visual Studio 2013 （及更早版本） 中，默认 delete[] 运算符未内置在应用程序的二进制文件中 (而不是默认的 new、new[] 和 delete 运算符）。它直接从 msvcr110d.dll.

调用

当使用 inline 关键字时，替换的 new[] 和 delete[] 运算符不会在整个应用程序中作为默认值使用 （与 new 和 delete 运算符相反） 除非我们明确包含 header.
因此默认的 new[] 运算符 （内置于应用程序的二进制文件中） 调用替换的 new 运算符。
但是默认的 delete[] 运算符 （直接从 msvcr110d.dll 调用） 找不到替换的 delete 运算符并使用默认的 delete运算符 （来自 msvcr110d.dll）.

对于我的解决方案，我删除了 inline 关键字并将运算符放在源文件中。
此错误已修复，不应出现在 Visual Studio 2015 （及更新版本）.

中

新建/删除不匹配

new / delete mismatch

c++

crash

new-operator

libraries

delete-operator