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From: "adelson.oliveira at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/109641] Gfortran fails to overload intrinsic operator
 (*) if operands are complex. It works with real ones.
Date: Fri, 28 Apr 2023 00:34:38 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109641

--- Comment #5 from Adelson Oliveira <adelson.oliveira at gmail dot com> ---
(In reply to anlauf from comment #2)
> Replacing the first argument of
>=20
>   FUNCTION MULTc4(v,m)
>     REAL,    INTENT(IN) :: v(:)
>=20
> by
>=20
>     complex, INTENT(IN) :: v(:)
>=20
> makes the code compile, but should not.  And the fortran-dump appears to
> explain why: we prematurely convert the first argument in the expression
>=20
>   r=3Dv*m
>=20
> from real to complex, so we resolve to the wrong specific.
> This also explains why real*real does not exhibit this problem.

Interesting! But I wonder why simply changing the intrinsic operator (*) to
something different, say (.MULT.) there is no error at all no matter one us=
es
complex or real.=