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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/113152] Fortran 2023 half-cycle trigonometric functions
Date: Mon, 22 Jan 2024 00:10:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113152

--- Comment #15 from kargl at gcc dot gnu.org ---
(In reply to Steve Kargl from comment #14)
> On Sun, Jan 21, 2024 at 09:52:39PM +0000, anlauf at gcc dot gnu.org wrote:
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113152
> >=20
> > I think that you cannot do
> >=20
> > +  if (MPFR_HALF_CYCLE)
> >=20
> > you really must use
> >=20
> > #if MPFR_HALF_CYCLE
> >=20
>=20

...

> Breakpoint 1, gfc_simplify_cospi (x=3D0x803e24b60)
>     at ../../gcc/gcc/fortran/simplify.cc:2085
> 2085      result =3D gfc_get_constant_expr (x->ts.type, x->ts.kind, &x->w=
here);
> (gdb) n
> 2101          mpfr_inits2 (2 * mpfr_get_prec (x->value.real), cs, n, r,
> NULL);

Good news is that your testing forced me to look at the
else-{} branch again, and it exposed a shortcoming.  I'm
looking at a fix.  So an updated patch will be necessary.=