Why do I get a runtime error for this simple thread example?


#include <iostream> #include <thread> int main() { std::thread th([] { std::cout << "Hello, World\n"; }); th.join(); }

This is all I have and it causes a runtime error. Why is that? I'm using GCC 4.8 (Ideone).


The error from ideone is:


terminate called after throwing an instance of 'std::system_error'<br /> what(): Enable multithreading to use std::thread: Operation not permitted


Which means you need to be compiling with -pthread as already suggested by @Praetorian.

The code runs fine in Visual Studio 2012.


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