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From: "pault at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/42385] [OOP] poylmorphic operators do not work Date: Fri, 16 Jul 2010 13:20:00 -0000 [thread overview] Message-ID: <20100716132020.862.qmail@sourceware.org> (raw) In-Reply-To: <bug-42385-16146@http.gcc.gnu.org/bugzilla/> ------- Comment #7 from pault at gcc dot gnu dot org 2010-07-16 13:20 ------- Created an attachment (id=21221) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21221&action=view) Fix for the PR Please note that this patch contains part of Janus' clean-up of vtabs diff. This came about because the tree on my laptop is too old. I will separate out the fix for PR42385 tonight. It bootstraps and regtests on RHEL5.3/i686. Paul The following runs correctly: module foo_module implicit none private public :: foo type :: foo integer :: i contains procedure :: times => times_foo procedure :: assign => assign_foo generic :: operator(*) => times generic :: assignment(=) => assign end type contains function times_foo(this,factor) result(product) class(foo) ,intent(in) :: this class(foo) ,pointer :: product real, intent(in) :: factor allocate (product, source = this) product%i = this%i * int (factor) end function subroutine assign_foo(lhs,rhs) class(foo) ,intent(inout) :: lhs class(foo) ,intent(in) :: rhs lhs%i = rhs%i end subroutine end module module bar_module use foo_module ,only : foo implicit none private public :: bar type ,extends(foo) :: bar real :: x contains procedure :: times => times_bar procedure :: assign => assign_bar end type contains subroutine assign_bar(lhs,rhs) class(bar) ,intent(inout) :: lhs class(foo) ,intent(in) :: rhs lhs%i = rhs%i select type(rhs) type is (bar) lhs%x = rhs%x end select end subroutine function times_bar(this,factor) result(product) class(bar) ,intent(in) :: this real, intent(in) :: factor class(foo), pointer :: product select type(this) type is (bar) allocate(product,source=this) select type(product) type is(bar) product%i = this%i*int(factor) product%x = this%x*factor end select end select end function end module program main use foo_module ,only : foo use bar_module ,only : bar implicit none type(foo) :: uniti = foo(2) type(bar) :: unitx = bar(2, 1.0) call rescale(uniti, 3.141592654) call rescale(unitx, 3.141592654) print *, uniti%i print *, unitx%x, unitx%i contains subroutine rescale(this,scale) class(foo) ,intent(inout) :: this real, intent(in) :: scale this = this*scale end subroutine end program -- pault at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |pault at gcc dot gnu dot org |dot org | Status|UNCONFIRMED |ASSIGNED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42385
next prev parent reply other threads:[~2010-07-16 13:20 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-12-15 23:01 [Bug fortran/42385] New: " janus at gcc dot gnu dot org 2010-05-21 14:02 ` [Bug fortran/42385] " damian at rouson dot net 2010-07-12 14:59 ` sfilippone at uniroma2 dot it 2010-07-12 14:59 ` sfilippone at uniroma2 dot it 2010-07-13 9:18 ` burnus at gcc dot gnu dot org 2010-07-13 9:24 ` sfilippone at uniroma2 dot it 2010-07-14 21:43 ` burnus at gcc dot gnu dot org 2010-07-16 13:20 ` pault at gcc dot gnu dot org [this message] 2010-07-19 18:49 ` pault at gcc dot gnu dot org 2010-07-19 20:12 ` paul dot richard dot thomas at gmail dot com 2010-07-20 8:09 ` burnus at gcc dot gnu dot org
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