Why is (void)&variable; construct used?

Matthew Dillon dillon at apollo.backplane.com
Tue Apr 26 14:39:12 PDT 2005

:On Tue, Apr 26, 2005 at 10:58:34AM -0700, Max Okumoto wrote:
:> With the new gcc do we still need the following construct?
:It's a way to force the symbols as used. Remove them.

    No, it's a way to force the variable declarations to NOT be placed
    in registers, so changes to the variables effect the parent of a
    vfork (if they are in registers then they don't effect the parent).
    GCC complains about that situation for vfork, setjmp, and longjmp

					Matthew Dillon 
					<dillon at xxxxxxxxxxxxx>

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