_FORTIFY_SOURCE for std::vector

[Jakub Jelinek]

On Fri, Jun 01, 2012 at 03:11:51PM +0100, Pedro Alves wrote:
> On 06/01/2012 02:36 PM, Paolo Carlini wrote:
> 
> > On 06/01/2012 03:22 PM, Pedro Alves wrote:
> >> The shorter version triggers an -Wundef warning if _FORTIFY_SOURCE is not defined. 
> > Interesting, but does it happen in system headers too?
> 
> 
> Good point.  I just tried and it doesn't.

But with -Wsystem-headers it does again.  It doesn't hurt to add that
defined ... && check to quiet it up.

	Jakub