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// Tests error code from system_error object thrown by thread(Fn&&, Args&&...) constructor,
// as described as http://msdn.microsoft.com/en-us/library/hh920547.aspx
// "If not enough resources are available to start a new thread, the function 
// throws a system_error object that has an error code of resource_unavailable_try_again". 
//
// Produces an unwanted error message ""My error code is wrong!!!" and -1 return value,
// when compiled as follows, on Microsoft Compiler Version 18.00.31101 for x86:
// D:\>cl MyTest.cpp /EHsc /MD
//
// Bug report: 
// "[C++] Comparison std::error_code from std::system_error to std::errc enum value incorrect when using DLL-version of run-time library"
// https://connect.microsoft.com/VisualStudio/feedbackdetail/view/1053790
// 
// Niels Dekker, December 2014

#include <chrono>
#include <iostream>
#include <thread>
#include <system_error>

int main()
{
	try
	{
		for (;;)  // As long as enough resources are available to start a new thread...
		{
			new std::thread([]
			{
				std::this_thread::sleep_for(std::chrono::hours{8}); 
			});
		}
	}
	catch (const std::system_error& mySystemError)
	{
		const std::error_code& myCode = mySystemError.code();

if (myCode != std::errc::resource_unavailable_try_again)
		{
			std::cerr << "My error code is wrong!!!\n"
				<< "myCode = '" << myCode << "'\n"
				<< "std::errc::resource_unavailable_try_again = "
				<< static_cast<int>(std::errc::resource_unavailable_try_again)
				<< std::endl;

return -1;
		}
	}
	return 0;
}

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Compilation time: 1.78 sec, absolute running time: 0.73 sec, absolute service time: 3.22 sec