On 10/08/2013 08:30 AM, Suvayu Ali wrote: > Okay, found my problem. I have to explicitly choose C++11. I did not > realise C++11 was not the default. Any ideas why? We (GCC maintainers) tend to change defaults when it's what the majority of users want. For most people C++11 is still experimental. Changing the default language is risky because it breaks build scripts. Andrew.