Why is std::weak_ptr::expired optimized away?

Why is std::weak_ptr::expired optimized away?

c++ multithreading c++11 visual-c++ shared-ptr

multithreading

How to find all global variables in C++ source code, DLL or any file created by the VC++ compiler?

c++ multithreading visual-studio visual-c++ thread-safety

multithreading

is assignment operator '=' atomic?

c++ multithreading thread-safety communication visual-c++

multithreading

C++11 std::thread vs windows CreateThread [closed]

c++ windows multithreading visual-c++

multithreading

std::locale/std::facet Critical section

c++ multithreading visual-c++ locale

multithreading

what exactly is fiber safe optimizations in VC++?

c++ arrays multithreading visual-c++ optimization

multithreading

Error C2280: 'std::thread::thread(const std::thread &)' : attempting to reference a deleted function

c++ multithreading visual-c++ c++11 visual-studio-2013

multithreading

Is static init thread-safe with VC2010?

c++ multithreading visual-c++ thread-safety c++11

multithreading

Is it possible to name a CWinThread thread?

c++ multithreading visual-c++ mfc

multithreading

Is it necessary to explicitly stop all threads prior to exiting a Win32 application?

windows multithreading winapi visual-c++

multithreading

VC++: Performance drop x20 when more threads than cpus but not under g++

c++ multithreading visual-c++ c++11 visual-studio-2013

multithreading

Do I need to protect read access to an STL container in a multithreading environment?

c++ multithreading visual-c++ stl concurrency

multithreading

Can I call CloseHandle() immediately after _beginthreadex() succeeded?

c++ windows multithreading visual-c++ beginthreadex

multithreading

Is VC++ still broken Sequentially-Consistent-wise?

c++ multithreading visual-c++ concurrency compiler-optimization

multithreading

"Magic static" singleton crashing when referenced in static destruction phase of another translation unit

c++ multithreading visual-c++ c++11 singleton

multithreading