(j3.2006) MPI usage problems in Fortran

[Aleksandar Donev]

Bill,

You really are not reading what I am saying. I was not complaining about 
VOLATILE in general. I am complaining about VOLATILE on a dummy argument, and 
this business about attributes leaking out of the routine to the actual. It 
is horribly misguided.

> The user
> is responsible for knowing within which program units the variable is
> subject to volatile changes, and give the variable the volatile
> attribute in those units.
Unless it is a dummy argument, in which case the standard makes no sense. Yet 
alone a VALUE dummy as Van said. If a dummy is volatile, it is volatile 
inside the routine. Period. There is nothing special about it. It should not 
even require an explicit rules. It should not in any way affect or have 
anything to do with the actual (which can have its own volatile attribute if 
needed).


Best,
Aleks