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! { dg-do compile }

! { dg-shouldfail "Invalid Fortran 2003 code" }

! { dg-options "-std=f2003 -fall-intrinsics" }

! PR fortran/23994

!

! Test PROTECTED attribute. Within the module everything is allowed.

! Outside (use-associated): For pointers, their association status

! may not be changed. For nonpointers, their value may not be changed.

!

! Test of a invalid code

module protmod

  implicit none

  integer, Protected          :: a

  integer, protected, target  :: at

  integer, protected, pointer :: ap

end module protmod

program main

  use protmod

  implicit none

  a = 43       ! { dg-error "Assigning to PROTECTED variable" }

  ap => null() ! { dg-error "Assigning to PROTECTED variable" }

  nullify(ap)  ! { dg-error "Assigning to PROTECTED variable" }

  ap => at     ! { dg-error "Assigning to PROTECTED variable" }

  ap = 3       ! { dg-error "Assigning to PROTECTED variable" }

  allocate(ap) ! { dg-error "Assigning to PROTECTED variable" }

  ap = 73      ! { dg-error "Assigning to PROTECTED variable" }

  call increment(a,at) ! { dg-error "use-associated with PROTECTED attribute" }

  call pointer_assignments(ap) ! { dg-error "is use-associated with PROTECTED attribute" }

contains

  subroutine increment(a1,a3)

    integer, intent(inout) :: a1, a3

    a1 = a1 + 1

    a3 = a3 + 1

  end subroutine increment

  subroutine pointer_assignments(p)

    integer, pointer,intent (inout) :: p

    p => null()

  end subroutine pointer_assignments

end program main

module prot2

  implicit none

contains

  subroutine bar

    real, protected :: b ! { dg-error "only allowed in specification part of a module" }

  end subroutine bar

end module prot2

! { dg-final { cleanup-modules "protmod" } }