AccessViolationException when using std::basic_ifstream::get() in C++/CLI, why?

Question

When I try to run this:

#include <tchar.h>
#include <fstream>

int _tmain(int argc, TCHAR *argv[])
{
    std::basic_ifstream<TCHAR> file("TestInput.txt");
    file.get();
}

I get an AccessViolationException with this stack trace:

ntdll.dll!_RtlpWaitOnCriticalSection@8()  + 0xae bytes  
ntdll.dll!_RtlpEnterCriticalSectionContended@4()  + 0xa1 bytes  
ntdll.dll!_RtlEnterCriticalSection@4()  - 0x1f885 bytes 
msvcr120.dll!__lock_file()  + 0x2ce45 bytes 
[Managed to Native Transition]  
MyProject.exe!std::basic_filebuf<char,std::char_traits<char> >::_Lock() Line 355    C++
msvcp120d.dll!std::basic_istream<char,std::char_traits<char> >::_Sentry_base::_Sentry_base()  + 0x55 bytes  
msvcp120d.dll!std::basic_istream<char,std::char_traits<char> >::sentry::sentry()  + 0x32 bytes  
msvcp120d.dll!std::basic_istream<char,std::char_traits<char> >::get()  + 0x5c bytes 
[Managed to Native Transition]  
MyProject.exe!wmain(int argc = 0x2, wchar_t** argv = 0x054AA3F8) [line # removed]   C++
MyProject.exe!__tmainCRTStartup()    [line # removed]   C
[Managed to Native Transition]  
mscoreei.dll!__CorExeMain@0()  + 0x71 bytes 
mscoree.dll!_ShellShim__CorExeMain@0()  + 0x227 bytes   
mscoree.dll!__CorExeMain_Exported@0()  + 0x8 bytes  
ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes   
ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes    

Why does this happen, and how can I avoid it when trying to read a file?

Answer 1

It was because I was compiling with the _DEBUG macro (left over from before converting from native). Removing it fixed the problem.

Answer 2

It sounds like you have macro's doing unexpected things. When you need to figure out what happened in Visual C++, have it dump the preprocessor output. Details on doing that are documented here .