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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/63797] Bogus ambiguous reference to 'sqrt'
Date: Wed, 14 Apr 2021 21:37:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D63797

--- Comment #7 from Steve Kargl <sgk at troutmask dot apl.washington.edu> -=
--
On Wed, Apr 14, 2021 at 08:43:50PM +0000, anlauf at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D63797
>=20
> --- Comment #6 from anlauf at gcc dot gnu.org ---
> Steve, can you give an example for the procedure pointer case you mention=
ed?
> I played a bit, but the only valid code that I can think of did not produ=
ce
> a reference to sqrt in such a way that it needs to show up in the mod.
>=20
> Extended testcase that compiles and also uses a procedure pointer to sqrt=
():
>=20

Your testcase is what I first thought about, but didn't try to
write.  The only other instance that I might be concerned about
is=20

module aaa

   abstract interface
      function real_func (x)
         real :: real_func
         real, intent (in) :: x
      end function real_func
   end interface

   procedure(real_func), pointer :: bah =3D> sqrt

end module aaa

which looks like a default initialization.  Does sqrt need to be
recorded into the module?  If not, then your patch is probably ok.=