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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/47240] [F03] segfault with procedure pointer component
Date: Tue, 11 Jan 2011 23:15:00 -0000 [thread overview]
Message-ID: <bug-47240-4-0YjDjtgAVS@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-47240-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47240
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-01-11 21:38:46 UTC ---
(In reply to comment #7)
> > ...
> > ... this produces loads of regressions.
>
> ... but the following variant doesn't:
> ...
Confirmed, however the following code
[macbook] f90/bug% cat pr35971_red.f90
module other_fun
use ISO_C_BINDING
implicit none
private
! Message to be returned by procedure pointed to
! by the C_FUNPTR
character, allocatable, save :: my_message(:)
! Interface block for the procedure pointed to
! by the C_FUNPTR
public abstract_fun
abstract interface
function abstract_fun(x)
use ISO_C_BINDING
import my_message
implicit none
integer(C_INT) x(:)
character(size(my_message),C_CHAR) abstract_fun(size(x))
end function abstract_fun
end interface
contains
! Procedure to store the message and get the C_FUNPTR
function gp(message) bind(C,name='BlAh')
! procedure(abstract_fun) make_mess
character(kind=C_CHAR) message(*)
type(C_FUNPTR) gp
integer(C_INT64_T) i
i = 1
do while(message(i) /= C_NULL_CHAR)
i = i+1
end do
my_message = message(int(1,kind(i)):i-1)
gp = get_funloc(make_mess,aux)
! gp = aux(make_mess)
end function gp
! Intermediate procedure to pass the function and get
! back the C_FUNPTR
function get_funloc(x,y)
procedure(abstract_fun) x
type(C_FUNPTR) y
external y
type(C_FUNPTR) get_funloc
get_funloc = y(x)
end function get_funloc
! Procedure to convert the function to C_FUNPTR
function aux(x)
interface
subroutine x() bind(C)
end subroutine x
end interface
type(C_FUNPTR) aux
aux = C_FUNLOC(x)
end function aux
! Procedure pointed to by the C_FUNPTR
function make_mess(x)
integer(C_INT) x(:)
character(size(my_message),C_CHAR) make_mess(size(x))
make_mess = transfer(my_message,make_mess(1))
end function make_mess
end module other_fun
end
gives at -O2 and above
[macbook] f90/bug% gfc -O2 pr35971_red.f90
pr35971_red.f90: In function 'gp':
pr35971_red.f90:67:0: error: non-trivial conversion at assignment
void (*<T64>) (void)
void (*<T49d>) (struct array1_unknown &, integer(kind=4), struct
array1_integer(kind=4) & restrict)
__result_gp_72 = make_mess;
pr35971_red.f90:67:0: internal compiler error: verify_stmts failed
next prev parent reply other threads:[~2011-01-11 21:39 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-10 9:10 [Bug fortran/47240] New: " m.a.hulsen at tue dot nl
2011-01-10 9:37 ` [Bug fortran/47240] " burnus at gcc dot gnu.org
2011-01-10 10:54 ` [Bug fortran/47240] [F03] " janus at gcc dot gnu.org
2011-01-10 20:34 ` janus at gcc dot gnu.org
2011-01-10 21:55 ` janus at gcc dot gnu.org
2011-01-11 11:55 ` janus at gcc dot gnu.org
2011-01-11 14:23 ` dominiq at lps dot ens.fr
2011-01-11 14:55 ` janus at gcc dot gnu.org
2011-01-11 23:15 ` dominiq at lps dot ens.fr [this message]
2011-01-12 21:00 ` janus at gcc dot gnu.org
2011-01-12 21:21 ` dominiq at lps dot ens.fr
2011-01-12 21:54 ` burnus at gcc dot gnu.org
2011-01-12 22:40 ` dominiq at lps dot ens.fr
2011-01-13 6:25 ` jvdelisle at gcc dot gnu.org
2011-01-13 18:58 ` dominiq at lps dot ens.fr
2011-01-18 23:21 ` janus at gcc dot gnu.org
2011-01-18 23:21 ` janus at gcc dot gnu.org
2011-01-19 8:57 ` m.a.hulsen at tue dot nl
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