Re: [Boost-users] [filesystem] path destructor crash

Bump. Does anyone have any idea why this code is causing a crash please? On 2 September 2013 13:15, Patrick Steele wrote:

boost = 1.54 IDE = Visual Studio 2005 / 2012 OS = Windows 7

Hi, I have a 32-bit application that I am upgrading from Visual Studio 2005 to 2012. If I place the following code at the beginning of the application:

{ //test 1 boost::filesystem::path blahPath; }

{ //test 2 boost::filesystem::path blahPath = _T( "C:\\ProgramData\\blah" ); }

{ //test 3 boost::filesystem::path blahPath; std::wstring text = _T( "C:\\ProgramData\\blah" ); blahPath = text; }

then it works fine in Visual Studio 2005, however test 3 crashes in Visual Studio 2012 with:

--------------------------- Microsoft Visual C++ Runtime Library --------------------------- Debug Assertion Failed!

File: f:\dd\vctools\crt_bld\self_x86\crt\src\dbgdel.cpp Line: 52

Expression: _BLOCK_TYPE_IS_VALID(pHead->nBlockUse)

and this callstack:

msvcr110d.dll!operator delete(void * pUserData) Line 52 C++ boost_filesystem-vc110-mt-gd-1_54.dll!std::allocator::deallocate(wchar_t * _Ptr, unsigned int __formal) Line 586 C++ boost_filesystem-vc110-mt-gd-1_54.dll!std::_Wrap_alloc

...

::deallocate(wchar_t * _Ptr, unsigned int _Count) Line 888 C++ boost_filesystem-vc110-mt-gd-1_54.dll!std::basic_string,std::allocator ::_Tidy(bool _Built, unsigned int _Newsize) Line 2265 C++ boost_filesystem-vc110-mt-gd-1_54.dll!std::basic_string,std::allocator ::~basic_string,std::allocator () Line 965 C++ boost_filesystem-vc110-mt-gd-1_54.dll!boost::filesystem::path::~path() C++ blah.exe!CPlanarApp::InitInstance() Line 152 C++ mfc110ud.dll!AfxWinMain(HINSTANCE__ * hInstance, HINSTANCE__ * hPrevInstance, wchar_t * lpCmdLine, int nCmdShow) Line 37 C++ blah.exe!wWinMain(HINSTANCE__ * hInstance, HINSTANCE__ * hPrevInstance, wchar_t * lpCmdLine, int nCmdShow) Line 26 C++ blah.exe!__tmainCRTStartup() Line 528 C blah.exe!wWinMainCRTStartup() Line 377 C kernel32.dll!75ce33aa() Unknown [Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll] ntdll.dll!76f09ef2() Unknown ntdll.dll!76f09ec5() Unknown

The boost::filesystem::path destructor is being called and is causing a crash. I do not understand how the first two tests can pass yet there is a problem with the third test. Is there something that I am doing wrong here or does anyone have any advice please? Thanks, Patrick