g++ running async???

Florian Weimer fweimer@redhat.com
Wed Apr 30 13:11:00 GMT 2014

On 04/30/2014 10:23 AM, moze wrote:

> I tried the suggestion below. And sync() does the trick. So seems not to be
> a problem of gcc but rather of the kernel. I consider this only a
> workaround, because flushing a system-wide cache in such a standard
> situation seems a littel over-kill. But that belongs in a another list.
> Or might it be that g++ takes control of the flushing-behaviour but forgets
> in the end that it cannot rely on the standard flush-on-process-end?

If calling sync() makes a difference, your system is severely broken. 
sync() should have no observable effect (beyond timing differences) 
while the system is running.

Florian Weimer / Red Hat Product Security Team

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