[Bug fortran/81509] Wrong compilation error: iand/ieor/ior + boz + -std=f2008

[sgk at troutmask dot apl.washington.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81509

--- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Sep 27, 2017 at 10:59:56PM +0000, dominiq at lps dot ens.fr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81509
> 
> --- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> pr45513 and pr54072 could be duplicates.
> 

I don't recall either of those PR's, and have no idea
why I would have missed them.  :-\

pr45513 should be covered by my patch.  A portion of pr54072
is also covered, but pr54072 indicates a BOZ can be used with
other intrinsic subprogramis, e.g., TRANSFER.  This isn't surprizing
as a boz is marked as a BT_INTEGER.  That is, for

gfc_expr x;

a boz has

x->ts.type = BT_INTEGER
x->is_boz = 1

In hindsight, we probably should have introduced BT_BOZ and
treat it has some opaque entity with helper functions.  For
example, gfc_boz2int(x,kind) would convert the BOZ in x to
an INTEGER with kind type parameter 'kind'.