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Hi,
when I try to compile the attached code I see the following error:
ifort test-ifort.f90 -o test-ifort
/tmp/ifort9y3yNI.o:(.rodata+0x50): undefined reference to `i_rhs_'
however up to my understanding the code is correct (and it compiles
with gfortran).
ifort -V
Intel Fortran Intel 64 Compiler XE for applications running on
Intel 64, Version 12.0.4.191 Build 20110427
Is this a compiler problem?
Thank you,
Marco
when I try to compile the attached code I see the following error:
ifort test-ifort.f90 -o test-ifort
/tmp/ifort9y3yNI.o:(.rodata+0x50): undefined reference to `i_rhs_'
however up to my understanding the code is correct (and it compiles
with gfortran).
ifort -V
Intel Fortran Intel 64 Compiler XE for applications running on
Intel 64, Version 12.0.4.191 Build 20110427
Is this a compiler problem?
Thank you,
Marco
[fortran]module mod_ti implicit none public :: c_ode, i_rhs private type, abstract :: c_ode contains procedure(i_rhs), deferred, pass(uuu) :: rhs end type c_ode abstract interface pure subroutine i_rhs(tnd,uuu) import :: c_ode implicit none class(c_ode), intent(in) :: uuu class(c_ode), intent(out) :: tnd end subroutine i_rhs end interface end module mod_ti !-------------------------------------------------------------------- module mod_ee use mod_ti, only: c_ode, i_rhs implicit none public :: ee contains pure subroutine ee(ynew,ynow) class(c_ode), intent(in) :: ynow class(c_ode), intent(out) :: ynew class(c_ode), allocatable :: tnd ! if the following two lines are eliminated the code compiles allocate(tnd,mold=ynow) deallocate(tnd) call ynow%rhs(ynew) end subroutine ee end module mod_ee !-------------------------------------------------------------------- module mod_pb use mod_ti, only: c_ode, i_rhs implicit none public :: t_ode, pb_rhs type, extends(c_ode) :: t_ode real :: y(3) contains procedure, pass(uuu) :: rhs => pb_rhs end type t_ode contains pure subroutine pb_rhs(tnd,uuu) class(t_ode), intent(in) :: uuu class(c_ode), intent(out) :: tnd select type(tnd) type is(t_ode) tnd%y = -3.0*uuu%y end select end subroutine pb_rhs end module mod_pb !-------------------------------------------------------------------- program ode_test use mod_pb, only: t_ode use mod_ee, only: ee implicit none type(t_ode) :: a, b a%y = (/ 1.0 , 2.0 , 3.0 /) call ee(b,a) end program ode_test [/fortran]
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Yes, it is a compiler problem that is fixed in a future update (probably September). The bug involves an abstract type with a deferred type-bound procedure. In some cases, the compiler erroneously generates an external reference to the deferred procedure name. The issue ID for this is DPD200169377 in case you want to watch for it in the list of fixed bugs.
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OK, thank you.
Marco
Marco
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