Experimental Physics and
Industrial Control System

Eric Norum <[email protected]> · Fri, 1 Dec 2006 11:41:48 -0600

The problem is not restricted to I/O access. Any pointer cast must

be viewed with suspicion -- and EPICS has *lots* of pointer casts.

Andrew feels that I'm being overly concerned about this given that

we've been using gcc with strict aliasing for some time with no

apparent problems. Perhaps I'm just a worry wart.

On Dec 1, 2006, at 11:15 AM, Jeff Hill wrote:

Kay,

There are lots of good reasons to declare your pointers to device

register

overlay structures with the volatile keyword, and if you do then

you won't

need to be concern yourself with strict aliasing issues.

--
Eric Norum <[email protected]>
Advanced Photon Source
Argonne National Laboratory
(630) 252-4793

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System