Re: [Xen-devel] [PATCH] KVM, XEN: Fix potential race in pvclock code

[Julian Stecklina <jsteckli@xxxxxxxxxxxxxxxxxxxx>]

On 01/17/2014 10:41 AM, Jan Beulich wrote:
> The half about converting local variable accesses
> back to memory reads (i.e. eliding the local variable), however,
> is only a theoretical issue afaict: If a compiler really did this, I
> think there'd be far more places where this would hurt.

It happens rarely, but it does happen. Not fixing those issues is
inviting trouble with new compiler generations. And these issues are
terribly hard to debug.

Julian

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