Am Donnerstag, den 19.11.2020, 18:58 +0000 schrieb Joseph Myers:
> On Thu, 19 Nov 2020, Uecker, Martin wrote:
...
>
> > +void g(void)
> > +{
> > + volatile int j;
> > + typeof((0,j)) i21; i21 = j;;
> > + typeof(+j) i22; i22 = j;;
> > + typeof(-j) i23; i23 = j;;
> > + typeof(1?j:0) i24; i24 = j;;
> > + typeof((int)j) i25; i25 = j;;
> > + typeof((volatile int)j) i26; i26 = j;;
> > +}
> > +
> > +void h(void)
> > +{
> > + _Atomic int j;
> > + typeof((0,j)) i32; i32 = j;;
> > + typeof(+j) i33; i33 = j;;
> > + typeof(-j) i34; i34 = j;;
> > + typeof(1?j:0) i35; i35 = j;;
> > + typeof((int)j) i36; i36 = j;;
> > + typeof((_Atomic int)j) i37; i37 = j;;
> > +}
> > +
> > +void e(void)
> > +{
> > + int* restrict j;
> > + typeof((0,j)) i43; i43 = j;;
> > + typeof(1?j:0) i44; i44 = j;;
> > + typeof((int*)j) i45; i45 = j;;
> > + typeof((int* restrict)j) i46; i46 = j;;
> > +}
>
> But these tests don't look like they do anything useful (i.e. verify that
> typeof loses the qualifier), because testing by assignment like that only
> works with const. You could do e.g.
>
> volatile int j;
> extern int i;
> extern typeof((0,j)) i;
>
> instead to verify the qualifier is removed.
Apparently I did not have enough coffee when
generalizing this to the other qualifiers.
Ok, with the following test?
/* test that lvalue conversions drops qualifiers, Bug 97702 */
/* { dg-do compile } */
/* { dg-options "" } */
const int jc;
extern int j;
extern typeof(0,jc) j;
extern typeof(+jc) j;
extern typeof(-jc) j;
extern typeof(1?jc:0) j;
extern typeof((int)jc) j;
extern typeof((const int)jc) j;
volatile int kv;
extern int k;
extern typeof(0,kv) k;
extern typeof(+kv) k;
extern typeof(-kv) k;
extern typeof(1?kv:0) k;
extern typeof((int)kv) k;
extern typeof((volatile int)kv) k;
_Atomic int la;
extern int l;
extern typeof(0,la) l;
extern typeof(+la) l;
extern typeof(-la) l;
extern typeof(1?la:0) l;
extern typeof((int)la) l;
extern typeof((_Atomic int)la) l;
int * restrict mr;
extern int *m;
extern typeof(0,mr) m;
extern typeof(1?mr:0) m;
extern typeof((int *)mr) m;
extern typeof((int * restrict)mr) m;
