gcc/testsuite/gfortran.dg/interface_assignment_5.f90

   1 ! { dg-do compile }
   2 !
   3 ! PR 42677: [4.5 Regression] Bogus Error: Ambiguous interfaces '...' in intrinsic assignment operator
   4 !
   5 ! Contributed by Harald Anlauf <anlauf@gmx.de>
   6
   7 module mod1
   8   implicit none
   9   type t_m
  10      integer :: i = 0
  11   end type t_m
  12 !------------------------------------------------------------------------------
  13   interface assignment (=)
  14      module procedure assign_m
  15   end interface
  16 !------------------------------------------------------------------------------
  17 contains
  18   subroutine assign_m (y, x)
  19     type(t_m) ,intent(inout) :: y
  20     type(t_m) ,intent(in)    :: x
  21   end subroutine assign_m
  22 end module mod1
  23 !==============================================================================
  24 module mod2
  25   use mod1, only: t_m, assignment(=)
  26   implicit none
  27   type t_atm
  28      integer :: k
  29   end type t_atm
  30 !------------------------------------------------------------------------------
  31   interface assignment(=)
  32      module procedure assign_to_atm
  33   end interface
  34 !------------------------------------------------------------------------------
  35   interface
  36      pure subroutine delete_m (x)
  37        use mod1
  38        type(t_m) ,intent(in) :: x
  39      end subroutine delete_m
  40   end interface
  41 !------------------------------------------------------------------------------
  42 contains
  43   subroutine assign_to_atm (atm, r)
  44     type(t_atm) ,intent(inout) :: atm
  45     integer     ,intent(in)    :: r
  46   end subroutine assign_to_atm
  47 end module mod2
  48
  49 ! { dg-final { cleanup-modules "mod1 mod2" } }