On 5 February 2013 10:09, Jonathan Wakely wrote: >> Is this a bug in the 4.7.1 compiler or did the compiler change to conform >> to some standard that does not allow vector's to initialized to NULL. > > I don't think it changed in quite some time. It's a very well known > problem, see http://open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#438, > but the implementation is supposed to ensure it works. I can't > remember if we have an open bug about it still. Looking into it further, I think we conform to C++ 2003 + DRs and the workarounds given earlier are necessary. In C++ 2011 the implementation should accept the code, so we'll have to fix that.