Does the keyword volatile work?

Fergus Henderson fjh@cs.mu.OZ.AU
Mon May 12 17:32:00 GMT 2003


On 12-May-2003, Stephen P. Smith <ischis2@cox.net> wrote:
> In the code fragment below which was produced with a 3.3 version of the gcc 
> compiler,
> why isn't the variable p1 assigned to mailboxHandle immediately?  I believe 
> that the
> keyword volatile should cause that to happen.

Firstly, I would suggest using `*(volatile DWORD *)&p1'
rather than `(volatile DWORD)p1'.

Secondly, if you want to be sure that the value will be assigned to
the target variable immediately, you need to declare the target
variable as volatile.

-- 
Fergus Henderson <fjh@cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.



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