[Bug fortran/45742] VOLATILE has no effect

[tkoenig at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45742

--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2010-11-12 
21:56:08 UTC ---
(In reply to comment #2)
> (In reply to comment #1)
> > Apparently, VOLATILE has no effect at all.  Another test case:
> [...]
> > Tobias, any ideas?
> 
> No idea:
>
> $ cat test.f90.003t.original
> ...
>   integer(kind=4) b;
>   volatile integer(kind=4) j;
> 
>   b = ((j + j) + j) + j;

I see:

foo (integer(kind=4) & restrict j)
{
  integer(kind=4) b;

  b = ((*j + *j) + *j) + *j;
  {
    struct __st_parameter_dt dt_parm.0;

so the volatile is missing.  Huh?

This may be a Heisenbug.  Unfortunately, valgrind doesn't work on
my system.