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From: "janus at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/42385] New: [OOP] poylmorphic operators do not work Date: Tue, 15 Dec 2009 23:01:00 -0000 [thread overview] Message-ID: <bug-42385-16146@http.gcc.gnu.org/bugzilla/> (raw) Spin-off from PR 42144 (comment #6). As the following code demonstrates, polymorphic type-bound operators are buggy: module foo_module implicit none private public :: foo type :: foo 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) ,allocatable :: product real, intent(in) :: factor end function subroutine assign_foo(lhs,rhs) class(foo) ,intent(inout) :: lhs class(foo) ,intent(in) :: rhs end subroutine end module module bar_module use foo_module ,only : foo implicit none private public :: bar type ,extends(foo) :: bar private real :: x=1. 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 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), allocatable :: product select type(this) type is (bar) allocate(product,source=this) select type(product) type is(bar) 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(bar) :: unit call rescale(unit,3.141592654) contains subroutine rescale(this,scale) class(foo) ,intent(inout) :: this real, intent(in) :: scale this = this*scale end subroutine end program This test case is compiled flawlessly, but the generated code is wrong: rescale (struct .class.foo & restrict this, real(kind=4) & restrict scale) { { struct .class.foo.a D.1631; D.1631 = times_foo ((struct .class.foo *) this, (real(kind=4) *) scale); assign_foo ((struct .class.foo *) this, &D.1631); } } The operators are always resolved to the base-class procedures. Polymorphic treatment is missing. -- Summary: [OOP] poylmorphic operators do not work Product: gcc Version: 4.5.0 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: janus at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42385
next reply other threads:[~2009-12-15 23:01 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-12-15 23:01 janus at gcc dot gnu dot org [this message] 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 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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